SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                       ----------------------------------
                                    FORM 6-K
                        REPORT OF FOREIGN PRIVATE ISSUER

                      Pursuant to Rule 13a-16 or 15d-16 of
                       The Securities Exchange Act of 1934
                         Date of Report: April 20, 2005

                           NOVA Chemicals Corporation
          1000, Seventh Avenue S.W., Calgary, Alberta, Canada, T2P 5L5
          ------------------------------------------------------------
                    (Address of principal executive offices)
                         Commission File Number: 1-13064

Indicate by check mark whether the registrant files or will file annual
reports under cover Form 20-F or Form 40-F.

        Form 20-F                                         Form 40-F  X
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Indicate by check mark whether the registrant by furnishing the information
contained in this Form is also thereby furnishing the information to the
Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

        Yes                                               No  X
           -----                                             ----

If "Yes" is marked, indicate below the file number assigned to the
registrant in connection with Rule 12g3-2(b): 82- N/A .
                                                  ----

A copy of the Registrant's:

(a)      interim financial statements for the first quarter, three months ended
         March 31, 2005;


are furnished herewith and are incorporated by reference into the following
Registration Statements:

               Registration Statement on Form S-8  #33-47673
               Registration Statement on Form S-8  #333-520
               Registration Statement on Form S-8  #333-9076
               Registration Statement on Form S-8  #333-9078
               Registration Statement on Form S-8  #33-86218
               Registration Statement on Form S-8  #33-77308
               Registration Statement on Form S-8  #333-11280
               Registration Statement on Form S-8  #333-12910
               Registration Statement on Form S-8  #333-101793
               Registration Statement on Form S-8  #333-109424
               Registration Statement on Form F-9  #333-13824


A copy of the Registrant's:

(b)      section 302 certification of principal executive officer;
(c)      section 302 certification of principal financial officer;
(d)      certification of principal executive officer pursuant to 18 U.S.C. ss.
         1350; and
(e)      certification of principal financial officer pursuant to 18 U.S.C. ss.
         1350

are furnished herewith.

Controls and Procedures

     (a)  Evaluation of disclosure controls and procedures. Our chief executive
          officer and our chief financial officer, after evaluating the
          effectiveness of the company's "disclosure controls and procedures"
          (as defined in the Securities Exchange Act of 1934 Rules 13a-15(e) and
          15d-15(e)) as of the end of the period covered by this report, have
          concluded that our disclosure controls and procedures were adequate
          and designed to ensure that material information relating to us and
          our consolidated subsidiaries would be made known to them by others
          within those entities.

     (b)  Changes in internal controls. There were no significant changes in our
          internal control over financial reporting that occurred during our
          last fiscal quarter that has materially affected, or is reasonably
          likely to materially affect, our internal control over financial
          reporting.

                                   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, thereunto duly authorized.




                                NOVA Chemicals Corporation



                                /s/ Jack S. Mustoe
                                --------------------------------------
                                Jack S. Mustoe
April 20, 2005                  Senior Vice-President Legal, General Counsel and
                                Corporate Secretary



                                    EXHIBITS
                                    --------

Attached hereto are:

(a)      the interim financial statements of NOVA Chemicals Corporation for the
         first quarter, three months ended March 31, 2005;

(b)      section 302 certification of principal executive officer;

(c)      section 302 certification of principal financial officer;

(d)      certification of principal executive officer pursuant to 18 U.S.C. ss.
         1350; and

(e)      certification of principal financial officer pursuant to 18 U.S.C. ss.
         1350.