<PAGE>


    As filed with the Securities and Exchange Commission on November 27, 2002
                              Registration No.333-
================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                   ----------
                                    FORM S-8
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933
                                   ----------
                           SIRIUS SATELLITE RADIO INC.
             (Exact name of registrant as specified in its charter)

             Delaware                                     52-170027
  (State or other jurisdiction of                       (IRS Employer
  incorporation or organization)                      Identification No.)

                     1221 Avenue of the Americas, 36th Floor
                            New York, New York 10020
                                 (212) 584-5100
       (Address, including zip code, and telephone number, including area
               code, of Registrant's principal executive offices)

                 SIRIUS SATELLITE RADIO INC. 401(k) SAVINGS PLAN
                            (Full title of the Plan)

                               Patrick L. Donnelly
             Executive Vice President, General Counsel and Secretary
                           Sirius Satellite Radio Inc.
                           1221 Avenue of the Americas
                                   36th Floor
                            New York, New York 10020
                                 (212) 584-5100
            (Name, address, including zip code, and telephone number,
                   including area code, of agent for service)
                                   ----------
                                   Copies to:
                                Paul D. Ginsberg
                    Paul, Weiss, Rifkind, Wharton & Garrison
                           1285 Avenue of the Americas
                          New York, New York 10019-6064
                                 (212) 373-3000
                                   ----------

<TABLE>
<CAPTION>

                                                  CALCULATION OF REGISTRATION FEE
----------------------------------------------------------------------------------------------------------------------------

        Title of each class          Amount to be  Proposed maximum offering        Proposed maximum           Amount of
 of securities to be registered(1)  Registered (2)    price per share (3)     aggregate offering price (3)  registration fee
----------------------------------------------------------------------------------------------------------------------------
<S>                                    <C>                   <C>                        <C>                      <C>
Shares of Sirius Satellite Radio
Inc. stock, par value $0.001
per share                               250,000               $0.76                      $190,000                 $17.48

Preferred stock purchase rights(4)      250,000                (4)                          (4)                     (4)
----------------------------------------------------------------------------------------------------------------------------
</TABLE>

(1)   In addition, pursuant to Rule 416 under the Securities Act of 1933, as
      amended, this registration statement also covers any shares of common
      stock and preferred stock purchase rights that may be issuable pursuant to
      the anti-dilution provisions of the employee benefit plan described
      herein. In addition, pursuant to Rule 416(c) under the Securities Act,
      this registration statement also covers an indeterminate amount of
      interests in the plan named above to be offered or sold pursuant to that
      plan.

(2)   This amount represents a 250,000 share increase in the number of shares of
      common stock authorized for issuance under the Sirius Satellite Radio Inc.
      401(k) Savings Plan.

(3)   The proposed maximum offering price per share and the registration fee
      were calculated in accordance with Rule 457(c) and (h) based on the
      average of the high and low prices for shares of the common stock on
      November 22, 2002, as reported in the Nasdaq National Market System, which
      was $0.76.

(4)   Each preferred stock purchase right represents the right to purchase one
      one-hundredth of a share of Series B Preferred Stock for each share of
      common stock. The rights are appurtenant to and trade with the common
      stock. The value attributable to the rights, if any, is reflected in the
      value of the common stock, and the registration fee for the rights is
      included in the fee for the Common Stock.




<PAGE>

                                  INTRODUCTION

     This Registration Statement on Form S-8 is filed by Sirius Satellite Radio
Inc., a Delaware corporation (the "Company"), with respect to an additional
250,000 shares of the Company's common stock, par value of $0.001 per share,
attached preferred stock purchase rights and an indeterminate number of plan
interests, issuable under the Sirius Satellite Radio Inc. 401(k) Savings Plan
(the "Plan"), and consists of those items required by General Instruction E to
Form S-8.

                                     PART II

                 INFORMATION REQUIRED IN REGISTRATION STATEMENT

Item 3. Incorporation of Documents by Reference

         The following documents filed by the Company with the Securities and
Exchange Commission (the "Commission") are incorporated herein by reference:

          1.   The Company's Annual Report on Form 10-K for the year ended
               December 31, 2001, as amended by Amendment No. 1 on Form 10-K/A
               dated April 30, 2002;

          2.   The Plan's Annual Report on Form 11-K for the year ended December
               31, 2001;

          3.   The Company's Quarterly Reports on Form 10-Q for the quarters
               ended September 30, 2002, June 30, 2002 and March 31, 2002;

          4.   The Company's Current Reports on Form 8-K dated January 3, 2002,
               April 11, 2002 and October 22, 2002;

          5.   The Company's Registration Statement on Form S-8 (File No.
               333-100083) dated September 25, 2002;

          6.   The Company's Registration Statement on Form S-8 (File No.
               333-81914) dated February 1, 2002;

          7.   The Company's Registration Statement on Form S-8 (File No.
               333-74752) dated December 7, 2001;

          8.   The Company's Registration Statement on Form S-8 (File No.
               333-62818) dated June 12, 2001;

          9.   The Company's Registration Statement on Form S-8 (File No.
               333-47954) dated October 13, 2000; and

          10.  The Company's Registration Statement on Form S-8 (File No.
               333-65473) dated October 8, 1998.

          11.  The descriptions of the Common Stock and the Rights contained in
               the Company's Registration Statement on Form S-3 (File No.
               333-64344).









<PAGE>


         All other documents filed by the Company with the Commission pursuant
to Sections 13(a), 13(c), 14 and 15(d) of the Securities Exchange Act of 1934,
as amended, subsequent to the date of this registration statement and prior to
the filing of a post-effective amendment which indicates that all securities
registered hereby have been sold or which deregisters all securities then
remaining unsold, shall be deemed to be incorporated by reference in this
registration statement and to be part hereof from the date of filing of such
documents. Any statement contained in a document incorporated or deemed to be
incorporated by reference herein shall be deemed to modified or superseded to
the extent that a statement contained in this registration statement or in any
other subsequently filed document which also is incorporated or deemed to be
incorporated by reference herein modifies or supersedes such statement. Any such
statement so modified or superseded shall not be deemed, except as so modified
or superseded, to constitute a part of this registration statement.

Item 5. Interests of Named Experts and Counsel

         Patrick L. Donnelly, Esq., whose legal opinion with respect to the
securities registered hereunder is filed as Exhibit 5.1 hereto, is an employee
of the Company and participates in the Plan and other benefit plans established
by the Company.

         The financial statements of Sirius Satellite Radio Inc. 401(k) Savings
Plan appearing in the Sirius Satellite Radio Inc. Annual Report on Form 11-K for
the year ended December 31, 2001, have been audited by Ernst & Young LLP,
independent auditors, as set forth in their report thereon and incorporated
herein by reference. Such financial statements are incorporated herein by
reference in reliance upon such report given on the authority of such firm as
experts in accounting and auditing.

Item 8. Exhibits

         See Exhibit Index elsewhere herein.




<PAGE>


                                   SIGNATURES

         Pursuant to the requirements of the Securities Act of 1933, as amended,
the registrant certifies that it has reasonable grounds to believe that it meets
all of the requirements for filing on Form S-8 and has duly caused this
registration statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of New York, State of New York, on November 27,
2002.

                                             SIRIUS SATELLITE RADIO INC.


                                             By: /s/ Patrick L. Donnelly
                                                 -------------------------------
                                                 Patrick L. Donnelly
                                                 Executive Vice President,
                                                 General Counsel and Secretary




<PAGE>


                                POWER OF ATTORNEY

         KNOW ALL MEN BY THESE PRESENTS, that each individual whose signature
appears below hereby constitutes and appoints Patrick L. Donnelly and Douglas A.
Kaplan, and each of them, his true and lawful agent, proxy and attorney-in-fact,
each acting alone with full power of substitution and resubstitution, for him
and in his name, place and stead, in any and all capacities, to (i) act on, sign
and file with the Commission any and all amendments (including post-effective
amendments) to this registration statement together with all schedules and
exhibits thereto, (ii) act on, sign and file such certificates, instruments,
agreements and other documents as may be necessary or appropriate in connection
therewith, and (iii) take any and all actions which may be necessary or
appropriate in connection therewith, granting unto such agents, proxies and
attorneys-in-fact, and each of them, full power and authority to do and perform
each and every act and thing necessary or appropriate to be done, as fully for
all intents and purposes as he might or could do in person, hereby approving,
ratifying and confirming all that such agents, proxies and attorneys-in-fact,
any of them or any of his or their substitutes may lawfully do or cause to be
done by virtue thereof.

         Pursuant to the requirements of the Securities Act of 1933, as amended,
this registration statement has been signed by the following persons in the
capacities and on the dates indicated:

<TABLE>
<CAPTION>
       Signatures                                 Title                                      Date
       ----------                                 -----                                      ----
<S>                                 <C>                                               <C>
/s/ Joseph P. Clayton                President and Chief Executive Officer              November 27, 2002
--------------------------           (Principal Executive Officer) and
Joseph P. Clayton                    Director

/s/ John J. Scelfo                   Executive Vice President and Chief                November 27, 2002
--------------------------           Financial Officer (Principal Financial
John J. Scelfo                       Officer)

/s/ Edward Weber, Jr.                Vice President and Controller                     November 27, 2002
---------------------------          (Principal Accounting Officer)
Edward Weber, Jr.

/s/ Leon D. Black                    Director                                          November 27, 2002
---------------------------
Leon D. Black

/s/ Lawrence F. Gilberti             Director                                          November 27, 2002
---------------------------
Lawrence F. Gilberti


/s/ James P. Holden                  Director                                          November 27, 2002
---------------------------
James P. Holden

/s/ David Margolese                  Chairman of the Board of Directors and            November 27, 2002
---------------------------          Director
David Margolese
</TABLE>




<PAGE>


<TABLE>
<S>                                 <C>                                               <C>
/s/ Peter G. Peterson                Director                                          November 27, 2002
---------------------------
Peter G. Peterson

/s/ Joseph V. Vittoria               Director                                          November 27, 2002
---------------------------
Joseph V. Vittoria
</TABLE>





<PAGE>


                               INDEX TO EXHIBITS

<TABLE>
<CAPTION>
Exhibit
  No.
-------
<S>       <C>
5.1       Opinion of Patrick L. Donnelly, Esq., Executive Vice President,
          General Counsel and Secretary of the Company (filed herewith).

23.1      Consent of Patrick L. Donnelly, Esq., Executive Vice President,
          General Counsel and Secretary of the Company (included in Exhibit
          5.1).

23.2      Consent of Ernst & Young LLP.

23.3      Consent of Arthur Andersen LLP, omitted pursuant to Rule 437a under
          the Securities Act of 1933.
</TABLE>
[{"type": "S-8", "sequence": "1", "filename": "a33847.txt", "description": "SIRIUS SATELLITE RADIO INC.", "secsgml_size_bytes": 14327}]
{"company-data": {"conformed-name": "SIRIUS SATELLITE RADIO INC", "cik": "0000908937", "assigned-sic": "4832", "irs-number": "521700207", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-101515", "film-number": "02842570"}, "business-address": {"street1": "1221 AVENUE OF THE AMERICAS", "street2": "36TH FLOOR", "city": "NEW YORK", "state": "NY", "zip": "10020", "phone": "2128995000"}, "mail-address": {"street1": "1221 AVENUE OF THE AMERICAS", "street2": "36TH FLOOR", "city": "NEW YORK", "state": "NY", "zip": "10020"}, "former-company": {"former-conformed-name": "CD RADIO INC", "date-changed": "19940203"}}
As filed with the Securities and Exchange Commission on November 27, 2002
                              Registration No.333-
================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                   ----------
                                    FORM S-8
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933
                                   ----------
                           SIRIUS SATELLITE RADIO INC.
             (Exact name of registrant as specified in its charter)

             Delaware                                     52-170027
  (State or other jurisdiction of                       (IRS Employer
  incorporation or organization)                      Identification No.)

                     1221 Avenue of the Americas, 36th Floor
                            New York, New York 10020
                                 (212) 584-5100
       (Address, including zip code, and telephone number, including area
               code, of Registrant's principal executive offices)

                 SIRIUS SATELLITE RADIO INC. 401(k) SAVINGS PLAN
                            (Full title of the Plan)

                               Patrick L. Donnelly
             Executive Vice President, General Counsel and Secretary
                           Sirius Satellite Radio Inc.
                           1221 Avenue of the Americas
                                   36th Floor
                            New York, New York 10020
                                 (212) 584-5100
            (Name, address, including zip code, and telephone number,
                   including area code, of agent for service)
                                   ----------
                                   Copies to:
                                Paul D. Ginsberg
                    Paul, Weiss, Rifkind, Wharton & Garrison
                           1285 Avenue of the Americas
                          New York, New York 10019-6064
                                 (212) 373-3000
                                   ----------
CALCULATION OF REGISTRATION FEE
----------------------------------------------------------------------------------------------------------------------------

        Title of each class          Amount to be  Proposed maximum offering        Proposed maximum           Amount of
 of securities to be registered(1)  Registered (2)    price per share (3)     aggregate offering price (3)  registration fee
----------------------------------------------------------------------------------------------------------------------------
Shares of Sirius Satellite Radio
Inc. stock, par value $0.001
per share                               250,000               $0.76                      $190,000                 $17.48

Preferred stock purchase rights(4)      250,000                (4)                          (4)                     (4)
----------------------------------------------------------------------------------------------------------------------------
(1)   In addition, pursuant to Rule 416 under the Securities Act of 1933, as
      amended, this registration statement also covers any shares of common
      stock and preferred stock purchase rights that may be issuable pursuant to
      the anti-dilution provisions of the employee benefit plan described
      herein. In addition, pursuant to Rule 416(c) under the Securities Act,
      this registration statement also covers an indeterminate amount of
      interests in the plan named above to be offered or sold pursuant to that
      plan.

(2)   This amount represents a 250,000 share increase in the number of shares of
      common stock authorized for issuance under the Sirius Satellite Radio Inc.
      401(k) Savings Plan.

(3)   The proposed maximum offering price per share and the registration fee
      were calculated in accordance with Rule 457(c) and (h) based on the
      average of the high and low prices for shares of the common stock on
      November 22, 2002, as reported in the Nasdaq National Market System, which
      was $0.76.

(4)   Each preferred stock purchase right represents the right to purchase one
      one-hundredth of a share of Series B Preferred Stock for each share of
      common stock. The rights are appurtenant to and trade with the common
      stock. The value attributable to the rights, if any, is reflected in the
      value of the common stock, and the registration fee for the rights is
      included in the fee for the Common Stock.
INTRODUCTION

     This Registration Statement on Form S-8 is filed by Sirius Satellite Radio
Inc., a Delaware corporation (the "Company"), with respect to an additional
250,000 shares of the Company's common stock, par value of $0.001 per share,
attached preferred stock purchase rights and an indeterminate number of plan
interests, issuable under the Sirius Satellite Radio Inc. 401(k) Savings Plan
(the "Plan"), and consists of those items required by General Instruction E to
Form S-8.

                                     PART II

                 INFORMATION REQUIRED IN REGISTRATION STATEMENT

Item 3. Incorporation of Documents by Reference

         The following documents filed by the Company with the Securities and
Exchange Commission (the "Commission") are incorporated herein by reference:

          1.   The Company's Annual Report on Form 10-K for the year ended
               December 31, 2001, as amended by Amendment No. 1 on Form 10-K/A
               dated April 30, 2002;

          2.   The Plan's Annual Report on Form 11-K for the year ended December
               31, 2001;

          3.   The Company's Quarterly Reports on Form 10-Q for the quarters
               ended September 30, 2002, June 30, 2002 and March 31, 2002;

          4.   The Company's Current Reports on Form 8-K dated January 3, 2002,
               April 11, 2002 and October 22, 2002;

          5.   The Company's Registration Statement on Form S-8 (File No.
               333-100083) dated September 25, 2002;

          6.   The Company's Registration Statement on Form S-8 (File No.
               333-81914) dated February 1, 2002;

          7.   The Company's Registration Statement on Form S-8 (File No.
               333-74752) dated December 7, 2001;

          8.   The Company's Registration Statement on Form S-8 (File No.
               333-62818) dated June 12, 2001;

          9.   The Company's Registration Statement on Form S-8 (File No.
               333-47954) dated October 13, 2000; and

          10.  The Company's Registration Statement on Form S-8 (File No.
               333-65473) dated October 8, 1998.

          11.  The descriptions of the Common Stock and the Rights contained in
               the Company's Registration Statement on Form S-3 (File No.
               333-64344).
All other documents filed by the Company with the Commission pursuant
to Sections 13(a), 13(c), 14 and 15(d) of the Securities Exchange Act of 1934,
as amended, subsequent to the date of this registration statement and prior to
the filing of a post-effective amendment which indicates that all securities
registered hereby have been sold or which deregisters all securities then
remaining unsold, shall be deemed to be incorporated by reference in this
registration statement and to be part hereof from the date of filing of such
documents. Any statement contained in a document incorporated or deemed to be
incorporated by reference herein shall be deemed to modified or superseded to
the extent that a statement contained in this registration statement or in any
other subsequently filed document which also is incorporated or deemed to be
incorporated by reference herein modifies or supersedes such statement. Any such
statement so modified or superseded shall not be deemed, except as so modified
or superseded, to constitute a part of this registration statement.

Item 5. Interests of Named Experts and Counsel

         Patrick L. Donnelly, Esq., whose legal opinion with respect to the
securities registered hereunder is filed as Exhibit 5.1 hereto, is an employee
of the Company and participates in the Plan and other benefit plans established
by the Company.

         The financial statements of Sirius Satellite Radio Inc. 401(k) Savings
Plan appearing in the Sirius Satellite Radio Inc. Annual Report on Form 11-K for
the year ended December 31, 2001, have been audited by Ernst & Young LLP,
independent auditors, as set forth in their report thereon and incorporated
herein by reference. Such financial statements are incorporated herein by
reference in reliance upon such report given on the authority of such firm as
experts in accounting and auditing.

Item 8. Exhibits

         See Exhibit Index elsewhere herein.
SIGNATURES

         Pursuant to the requirements of the Securities Act of 1933, as amended,
the registrant certifies that it has reasonable grounds to believe that it meets
all of the requirements for filing on Form S-8 and has duly caused this
registration statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of New York, State of New York, on November 27,
2002.

                                             SIRIUS SATELLITE RADIO INC.

                                             By: /s/ Patrick L. Donnelly
                                                 -------------------------------
                                                 Patrick L. Donnelly
                                                 Executive Vice President,
                                                 General Counsel and Secretary
POWER OF ATTORNEY

         KNOW ALL MEN BY THESE PRESENTS, that each individual whose signature
appears below hereby constitutes and appoints Patrick L. Donnelly and Douglas A.
Kaplan, and each of them, his true and lawful agent, proxy and attorney-in-fact,
each acting alone with full power of substitution and resubstitution, for him
and in his name, place and stead, in any and all capacities, to (i) act on, sign
and file with the Commission any and all amendments (including post-effective
amendments) to this registration statement together with all schedules and
exhibits thereto, (ii) act on, sign and file such certificates, instruments,
agreements and other documents as may be necessary or appropriate in connection
therewith, and (iii) take any and all actions which may be necessary or
appropriate in connection therewith, granting unto such agents, proxies and
attorneys-in-fact, and each of them, full power and authority to do and perform
each and every act and thing necessary or appropriate to be done, as fully for
all intents and purposes as he might or could do in person, hereby approving,
ratifying and confirming all that such agents, proxies and attorneys-in-fact,
any of them or any of his or their substitutes may lawfully do or cause to be
done by virtue thereof.

         Pursuant to the requirements of the Securities Act of 1933, as amended,
this registration statement has been signed by the following persons in the
capacities and on the dates indicated:
Signatures                                 Title                                      Date
       ----------                                 -----                                      ----
/s/ Joseph P. Clayton                President and Chief Executive Officer              November 27, 2002
--------------------------           (Principal Executive Officer) and
Joseph P. Clayton                    Director

/s/ John J. Scelfo                   Executive Vice President and Chief                November 27, 2002
--------------------------           Financial Officer (Principal Financial
John J. Scelfo                       Officer)

/s/ Edward Weber, Jr.                Vice President and Controller                     November 27, 2002
---------------------------          (Principal Accounting Officer)
Edward Weber, Jr.

/s/ Leon D. Black                    Director                                          November 27, 2002
---------------------------
Leon D. Black

/s/ Lawrence F. Gilberti             Director                                          November 27, 2002
---------------------------
Lawrence F. Gilberti

/s/ James P. Holden                  Director                                          November 27, 2002
---------------------------
James P. Holden

/s/ David Margolese                  Chairman of the Board of Directors and            November 27, 2002
---------------------------          Director
David Margolese
/s/ Peter G. Peterson                Director                                          November 27, 2002
---------------------------
Peter G. Peterson

/s/ Joseph V. Vittoria               Director                                          November 27, 2002
---------------------------
Joseph V. Vittoria
INDEX TO EXHIBITS
Exhibit
  No.
-------
5.1       Opinion of Patrick L. Donnelly, Esq., Executive Vice President,
          General Counsel and Secretary of the Company (filed herewith).

23.1      Consent of Patrick L. Donnelly, Esq., Executive Vice President,
          General Counsel and Secretary of the Company (included in Exhibit
          5.1).

23.2      Consent of Ernst & Young LLP.

23.3      Consent of Arthur Andersen LLP, omitted pursuant to Rule 437a under
          the Securities Act of 1933.