<PAGE>

                                  UNITED STATES

                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

                                    FORM 8-K

                                 CURRENT REPORT

     PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934


Date of Report (Date of earliest event reported)      April 17, 2003
                                                --------------------------------


                              Cytec Industries Inc.
         --------------------------------------------------------------
             (Exact name of registrant as specified in its charter)


        Delaware                       1-12372                   22-3268660
--------------------------------------------------------------------------------
(State or other jurisdiction         (Commission             (IRS Employer
 of incorporation)                   File Number)            Identification No.)


         Five Garret Mountain Plaza
         West Paterson NJ                                          07424
         -----------------------------------------------------------------------
         (Address of principal executive offices)               (Zip Code)


Registrant's telephone number, including area code   (973) 357-3100
                                                  ------------------------------

       -------------------------------------------------------------------
          (Former name or former address, if changed since last report)

<PAGE>

ITEM 9. INFORMATION PROVIDED UNDER ITEM 12 - DISCLOSURE OF RESULTS OF OPERATIONS
AND FINANCIAL CONDITION


The information required by Item 12 is being provided under Item 9 pursuant to
the SEC Interim filing guidance provided in SEC Release No. 33-8216.

The following information is furnished pursuant to Item 12, "Results of
Operations and Financial Condition". The information in this Form 8-K and the
Exhibit attached hereto shall not be deemed "filed" for purposes of Section 18
of the Securities Act of 1934, nor shall it be deemed incorporated by reference
in any filing under the Securities Act of 1933, except as shall be expressly set
forth by specific reference in such filing.

On April 17, 2003, Cytec Industries Inc. issued a press release announcing
financial results for the quarter ended March 31, 2003. A copy of the press
release is attached as Exhibit 99.1 to this Current Report on Form 8-K.

<PAGE>

                                   SIGNATURES

     Pursuant to the requirements of the Securities Exchange Act of 1934, the

registrant has duly caused this report to be signed on its behalf by the

undersigned hereunto duly authorized.

                                            Cytec Industries Inc.
                                            ------------------------------------

                                                         (Registrant)



Date  April 17, 2003                        /s/ J. P. Cronin
    ----------------                        ------------------------------------
                                            J. P. Cronin
                                            Executive Vice President and
                                            Chief Financial Officer
<PAGE>

                                  Exhibit Index

Exhibit Number                                           Description
--------------                                           -----------

99.1                                                     Press Release dated
                                                         April 17, 2003
[{"type": "8-K", "sequence": "1", "filename": "g8k-30935.txt", "description": "8-K", "secsgml_size_bytes": 3643}]
{"company-data": {"conformed-name": "CYTEC INDUSTRIES INC/DE/", "cik": "0000912513", "assigned-sic": "2890", "irs-number": "223268660", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "001-12372", "film-number": "03656318"}, "business-address": {"street1": "FIVE GARRET MOUNTAIN PLAZA", "city": "WEST PATERSON", "state": "NJ", "zip": "07424", "phone": "9733573100"}, "mail-address": {"street1": "FIVE GARRET MOUNTAIN PLAZA", "city": "WEST PATERSON", "state": "NJ", "zip": "07424"}}
UNITED STATES

                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

                                    FORM 8-K

                                 CURRENT REPORT

     PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported)      April 17, 2003
                                                --------------------------------

                              Cytec Industries Inc.
         --------------------------------------------------------------
             (Exact name of registrant as specified in its charter)

        Delaware                       1-12372                   22-3268660
--------------------------------------------------------------------------------
(State or other jurisdiction         (Commission             (IRS Employer
 of incorporation)                   File Number)            Identification No.)

         Five Garret Mountain Plaza
         West Paterson NJ                                          07424
         -----------------------------------------------------------------------
         (Address of principal executive offices)               (Zip Code)

Registrant's telephone number, including area code   (973) 357-3100
                                                  ------------------------------

       -------------------------------------------------------------------
          (Former name or former address, if changed since last report)
ITEM 9. INFORMATION PROVIDED UNDER ITEM 12 - DISCLOSURE OF RESULTS OF OPERATIONS
AND FINANCIAL CONDITION

The information required by Item 12 is being provided under Item 9 pursuant to
the SEC Interim filing guidance provided in SEC Release No. 33-8216.

The following information is furnished pursuant to Item 12, "Results of
Operations and Financial Condition". The information in this Form 8-K and the
Exhibit attached hereto shall not be deemed "filed" for purposes of Section 18
of the Securities Act of 1934, nor shall it be deemed incorporated by reference
in any filing under the Securities Act of 1933, except as shall be expressly set
forth by specific reference in such filing.

On April 17, 2003, Cytec Industries Inc. issued a press release announcing
financial results for the quarter ended March 31, 2003. A copy of the press
release is attached as Exhibit 99.1 to this Current Report on Form 8-K.
SIGNATURES

     Pursuant to the requirements of the Securities Exchange Act of 1934, the

registrant has duly caused this report to be signed on its behalf by the

undersigned hereunto duly authorized.

                                            Cytec Industries Inc.
                                            ------------------------------------

                                                         (Registrant)

Date  April 17, 2003                        /s/ J. P. Cronin
    ----------------                        ------------------------------------
                                            J. P. Cronin
                                            Executive Vice President and
                                            Chief Financial Officer
Exhibit Index

Exhibit Number                                           Description
--------------                                           -----------

99.1                                                     Press Release dated
                                                         April 17, 2003