<PAGE>

                                                  Registration Number 333-______

    As filed with the Securities and Exchange Commission on April 26, 2000.


                      SECURITIES AND EXCHANGE COMMISSION
                             Washington, DC  20549
                       --------------------------------
                                   FORM S-8
                            REGISTRATION STATEMENT
                                     UNDER
                          THE SECURITIES ACT OF 1933
                                ______________
                        CONVERGENT COMMUNICATIONS, INC.
            (Exact Name of Registrant as Specified in its Charter)
<TABLE>
<S>                              <C>                             <C>
         Colorado                         4813                        84-1337265
(State or Other Jurisdiction     (Primary Standard Industrial       (I.R.S. Employer
    of Incorporation or           Classification Code Number)     Identification Number)
       Organization)
</TABLE>

                     400 Inverness Drive South, Suite 400
                          Englewood, Colorado  80112
         (Address of Principal Executive Offices, including Zip Code)


                        Convergent Communications, Inc.
                             Stock Incentive Plan

                           (Full Title of the Plan)

                               MARTIN E. FREIDEL
                        Convergent Communications, Inc.
                     400 Inverness Drive South, Suite 400
                          Englewood, Colorado  80112
                    (Name and Address of Agent for Service)
                                (303) 749-3000

         (Telephone Number, Including Area Code, of Agent for Service)

                                ---------------

                                  Copies to:

                            RICHARD M. RUSSO, Esq.
                          Gibson, Dunn & Crutcher LLP
                      1801 California Street, Suite 4100
                         Denver, Colorado  80202-2641
                                (303) 298-5700

                                ---------------


                        CALCULATION OF REGISTRATION FEE
<TABLE>
<CAPTION>
==========================================================================================================================
   Title of Securities        Amount to          Proposed Maximum          Proposed Maximum
    to be Registered        be Registered       Offering Price per            Aggregate                Amount of
                                                     Share (1)             Offering Price (1)       Registration Fee
--------------------------------------------------------------------------------------------------------------------------
<S>                         <C>                 <C>                        <C>                      <C>
Common Stock, no par value    1,500,000          $7.84375 per share           $11,765,625               $3,106.13
===========================================================================================================================
</TABLE>
(1) For purposes of computing the registration fee only. Pursuant to Rule 457(c)
    and 457(h)(1), the filing fee for the 1,500,000 shares subject to options
    have not yet been granted is calculated based upon the average high and low
    prices of the Common Stock reported on April 19, 2000, which is $7.84375 per
    share.



This Form S-8 contains 7 sequentially numbered pages.  The Exhibit Index appears
at sequentially numbered page 7.



<PAGE>

                               EXPLANATORY NOTE

Registration of Additional Shares

     By a Registration Statement on Form S-8 filed with the Securities and
Exchange Commission on February 1, 2000, File No. 333-95897, as amended by a
Post Effective Amendment filed on February 3, 2000 (the "Initial Registration
Statement"), Convergent Communications, Inc. (the "Company") previously
registered 2,000,000 shares of its common stock, no par value (the "Common
Stock"), reserved for issuance from time to time under its Stock Incentive Plan
(the "Plan"). In March 2000, the Company amended the Plan to increase the number
of shares that may be granted for all purposes under the Plan to 3,500,000.
Under this Registration Statement on Form S-8, the Company is registering an
additional 1,500,000 shares of Common Stock issuable under the Plan.


                                    PART I

             INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS

Pursuant to General Instruction E to Form S-8, Part I is not filed as part of
this Registration Statement.
<PAGE>

                                    PART II

              INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

Pursuant to General Instruction E to Form S-8, the contents of the Company's
Initial Registration Statement are incorporated by reference into this
Registration Statement.

For purposes of this Registration Statement, any statement contained in a
document incorporated or deemed to be incorporated herein by reference shall be
deemed to be modified or superseded to the extent that a statement contained
herein or in any other subsequently filed document which also is or is deemed to
be incorporated herein by reference modifies or supersedes such statement in
such document.  Any statement so modified or superseded shall not be deemed,
except as so modified or superseded, to constitute a part of this Registration
Statement.

Item 8.    Exhibits.
           ---------

Pursuant to General Instruction E to Form S-8, only the following exhibits are
required.

   Exhibit
   Number   Description
   ------   -----------
     5.1    Opinion of Gibson, Dunn & Crutcher, LLP

    23.1    Consent of Gibson, Dunn & Crutcher, LLP (included in Exhibit 5.1)

    24.1    Power of Attorney (incorporated by reference to the signature page
            of this Registration Statement)

   99.11    Stock Incentive Plan (incorporated by reference to Exhibit 99.11 of
            the Initial Registration Statement)

   99.12    First Amendment to the Stock Incentive Plan, effective as of March
            31, 2000.
<PAGE>

                                  SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, 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 Englewood, State of Colorado, on April 26, 2000.

                              CONVERGENT COMMUNICATIONS, INC.



                              By:  /s/ Joseph R. Zell
                                 -------------------------------
                                 Name:  Joseph R. Zell
                                 Title: Chief Executive Officer


                               POWER OF ATTORNEY

     Each person whose signature appears below constitutes and appoints Martin
E. Freidel, his true and lawful attorney-in-fact and agent, with full power of
substitution and resubstitution, for him and in his name, place and stead, in
any and all capacities, to sign any and all amendments (including post-effective
amendments) to this Registration Statement, and to file the same, with all
exhibits thereto and other documents in connection therewith, with the
Securities and Exchange Commission, granting unto said attorney-in-fact and
agent full power and authority to do and perform each and every act and thing
requisite and necessary to be done in and about the premises, as fully to all
intents and purposes as he might or could do in person, hereby ratifying and
confirming all that said attorney-in-fact and agent, or his substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed by the following persons in the
capacities and on the dates indicated.
<TABLE>
<CAPTION>
            Signature                             Title                         Date
            ---------                             -----                         ----
<S>                                 <C>                                <C>
/s/ Joseph R. Zell                     Chief Executive Officer and         April 26, 2000
----------------------------------    Director (Principal Executive
Joseph R. Zell                                  Officer)

/s/ Brian R. Ervine                    Chief Financial Officer and
----------------------------------   Treasurer (Principal Financial        April 26, 2000
Brian R. Ervine                          and Accounting Officer)

                                                 Director
----------------------------------                                         April 26, 2000
Richard G. Tomlinson

/s/ Spencer I. Browne                            Director
----------------------------------                                         April 26, 2000
Spencer I. Browne

                                                 Director
----------------------------------                                         April 26, 2000
Michael J. Marocco

/s/ Richard W. Boyce                             Director
----------------------------------                                         April 26, 2000
Richard W. Boyce

/s/ Jeffrey A. Shaw                              Director
----------------------------------                                         April 26, 2000
Jeffrey A. Shaw
</TABLE>
<PAGE>

                                 EXHIBIT INDEX

    Exhibit
     Number      Description
     ------      -----------
       5.1       Opinion of Gibson, Dunn & Crutcher, LLP

      23.1       Consent of Gibson, Dunn & Crutcher, LLP (included in Exhibit
                 5.1)

      24.1       Power of Attorney (incorporated by reference to the signature
                 page of this Registration Statement)

     99.11       Stock Incentive Plan (incorporated by reference to Exhibit
                 99.11 of the Initial Registration Statement)

     99.12       First Amendment to the Stock Incentive Plan, effective as of
                 March 31, 2000.
[{"type": "S-8", "sequence": "1", "description": "CONVERGENT COMM. FORM S-8", "secsgml_size_bytes": 10344}]
{"company-data": {"conformed-name": "CONVERGENT COMMUNICATIONS INC /CO", "cik": "0001046558", "assigned-sic": "4813", "irs-number": "841337265", "state-of-incorporation": "CO", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-35674", "film-number": "609630"}, "business-address": {"street1": "400 INVERNESS DRIVE SOUTH", "street2": "SUITE 400", "city": "ENGLEWOOD", "state": "CO", "zip": "80112", "phone": "3037493000"}, "mail-address": {"street1": "400 INVERNESS DR. SOUTH", "street2": "SUITE 400", "city": "ENGLEWOOD", "state": "CO", "zip": "80112"}}
Registration Number 333-______

    As filed with the Securities and Exchange Commission on April 26, 2000.

                      SECURITIES AND EXCHANGE COMMISSION
                             Washington, DC  20549
                       --------------------------------
                                   FORM S-8
                            REGISTRATION STATEMENT
                                     UNDER
                          THE SECURITIES ACT OF 1933
                                ______________
                        CONVERGENT COMMUNICATIONS, INC.
            (Exact Name of Registrant as Specified in its Charter)
Colorado                         4813                        84-1337265
(State or Other Jurisdiction     (Primary Standard Industrial       (I.R.S. Employer
    of Incorporation or           Classification Code Number)     Identification Number)
       Organization)
400 Inverness Drive South, Suite 400
                          Englewood, Colorado  80112
         (Address of Principal Executive Offices, including Zip Code)

                        Convergent Communications, Inc.
                             Stock Incentive Plan

                           (Full Title of the Plan)

                               MARTIN E. FREIDEL
                        Convergent Communications, Inc.
                     400 Inverness Drive South, Suite 400
                          Englewood, Colorado  80112
                    (Name and Address of Agent for Service)
                                (303) 749-3000

         (Telephone Number, Including Area Code, of Agent for Service)

                                ---------------

                                  Copies to:

                            RICHARD M. RUSSO, Esq.
                          Gibson, Dunn & Crutcher LLP
                      1801 California Street, Suite 4100
                         Denver, Colorado  80202-2641
                                (303) 298-5700

                                ---------------

                        CALCULATION OF REGISTRATION FEE
==========================================================================================================================
   Title of Securities        Amount to          Proposed Maximum          Proposed Maximum
    to be Registered        be Registered       Offering Price per            Aggregate                Amount of
                                                     Share (1)             Offering Price (1)       Registration Fee
--------------------------------------------------------------------------------------------------------------------------
Common Stock, no par value    1,500,000          $7.84375 per share           $11,765,625               $3,106.13
===========================================================================================================================
(1) For purposes of computing the registration fee only. Pursuant to Rule 457(c)
    and 457(h)(1), the filing fee for the 1,500,000 shares subject to options
    have not yet been granted is calculated based upon the average high and low
    prices of the Common Stock reported on April 19, 2000, which is $7.84375 per
    share.

This Form S-8 contains 7 sequentially numbered pages.  The Exhibit Index appears
at sequentially numbered page 7.
EXPLANATORY NOTE

Registration of Additional Shares

     By a Registration Statement on Form S-8 filed with the Securities and
Exchange Commission on February 1, 2000, File No. 333-95897, as amended by a
Post Effective Amendment filed on February 3, 2000 (the "Initial Registration
Statement"), Convergent Communications, Inc. (the "Company") previously
registered 2,000,000 shares of its common stock, no par value (the "Common
Stock"), reserved for issuance from time to time under its Stock Incentive Plan
(the "Plan"). In March 2000, the Company amended the Plan to increase the number
of shares that may be granted for all purposes under the Plan to 3,500,000.
Under this Registration Statement on Form S-8, the Company is registering an
additional 1,500,000 shares of Common Stock issuable under the Plan.

                                    PART I

             INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS

Pursuant to General Instruction E to Form S-8, Part I is not filed as part of
this Registration Statement.
PART II

              INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

Pursuant to General Instruction E to Form S-8, the contents of the Company's
Initial Registration Statement are incorporated by reference into this
Registration Statement.

For purposes of this Registration Statement, any statement contained in a
document incorporated or deemed to be incorporated herein by reference shall be
deemed to be modified or superseded to the extent that a statement contained
herein or in any other subsequently filed document which also is or is deemed to
be incorporated herein by reference modifies or supersedes such statement in
such document.  Any statement so modified or superseded shall not be deemed,
except as so modified or superseded, to constitute a part of this Registration
Statement.

Item 8.    Exhibits.
           ---------

Pursuant to General Instruction E to Form S-8, only the following exhibits are
required.

   Exhibit
   Number   Description
   ------   -----------
     5.1    Opinion of Gibson, Dunn & Crutcher, LLP

    23.1    Consent of Gibson, Dunn & Crutcher, LLP (included in Exhibit 5.1)

    24.1    Power of Attorney (incorporated by reference to the signature page
            of this Registration Statement)

   99.11    Stock Incentive Plan (incorporated by reference to Exhibit 99.11 of
            the Initial Registration Statement)

   99.12    First Amendment to the Stock Incentive Plan, effective as of March
            31, 2000.
SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, 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 Englewood, State of Colorado, on April 26, 2000.

                              CONVERGENT COMMUNICATIONS, INC.

                              By:  /s/ Joseph R. Zell
                                 -------------------------------
                                 Name:  Joseph R. Zell
                                 Title: Chief Executive Officer

                               POWER OF ATTORNEY

     Each person whose signature appears below constitutes and appoints Martin
E. Freidel, his true and lawful attorney-in-fact and agent, with full power of
substitution and resubstitution, for him and in his name, place and stead, in
any and all capacities, to sign any and all amendments (including post-effective
amendments) to this Registration Statement, and to file the same, with all
exhibits thereto and other documents in connection therewith, with the
Securities and Exchange Commission, granting unto said attorney-in-fact and
agent full power and authority to do and perform each and every act and thing
requisite and necessary to be done in and about the premises, as fully to all
intents and purposes as he might or could do in person, hereby ratifying and
confirming all that said attorney-in-fact and agent, or his substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

     Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed by the following persons in the
capacities and on the dates indicated.
Signature                             Title                         Date
            ---------                             -----                         ----
/s/ Joseph R. Zell                     Chief Executive Officer and         April 26, 2000
----------------------------------    Director (Principal Executive
Joseph R. Zell                                  Officer)

/s/ Brian R. Ervine                    Chief Financial Officer and
----------------------------------   Treasurer (Principal Financial        April 26, 2000
Brian R. Ervine                          and Accounting Officer)

                                                 Director
----------------------------------                                         April 26, 2000
Richard G. Tomlinson

/s/ Spencer I. Browne                            Director
----------------------------------                                         April 26, 2000
Spencer I. Browne

                                                 Director
----------------------------------                                         April 26, 2000
Michael J. Marocco

/s/ Richard W. Boyce                             Director
----------------------------------                                         April 26, 2000
Richard W. Boyce

/s/ Jeffrey A. Shaw                              Director
----------------------------------                                         April 26, 2000
Jeffrey A. Shaw
EXHIBIT INDEX

    Exhibit
     Number      Description
     ------      -----------
       5.1       Opinion of Gibson, Dunn & Crutcher, LLP

      23.1       Consent of Gibson, Dunn & Crutcher, LLP (included in Exhibit
                 5.1)

      24.1       Power of Attorney (incorporated by reference to the signature
                 page of this Registration Statement)

     99.11       Stock Incentive Plan (incorporated by reference to Exhibit
                 99.11 of the Initial Registration Statement)

     99.12       First Amendment to the Stock Incentive Plan, effective as of
                 March 31, 2000.