Exhibit 3  
  Ernst & Young LLP
  
  Phone:
  403
  290-4100Chartered Accountants
  
  Fax:
  403
  290-4265Ernst
  & Young Tower1000
  440 2 Avenue SWCalgary
  AB Canada T2P 5E9  Re:Consent of Independent Chartered Accountants    We consent to the use of
our report dated February 12, 2004 with respect to the consolidated financial
statements of NOVA Chemicals Corporation for the years ended December 31, 2003,
2002 and 2001 included in the Annual Information Form, filed under cover of the
Annual Report (Form 40-F) for 2003 with the Securities and Exchange Commission.  We consent to the
incorporation by reference in the Registration Statement (Form S-8 No.
333-101793) pertaining to the Employee Savings and Profit Sharing Plan for
Canadian Employees, the Director Share Unit Plan, the Deferred Share Unit Plan
for Key Employees, the Deferred Share Unit Plan for US Key Employees and the
Deferred Share Unit Plan for Non-Employee Directors of NOVA Chemicals
Corporation, and the Employee Savings and Profit Sharing Plan for US Employees,
the US Savings and Profit Sharing Restoration Plan and the Capital Accumulation
Plan of NOVA Chemicals Inc. of our report dated February 12, 2004 with respect
to the consolidated financial statements of NOVA Chemicals Corporation included
in the Annual Report (Form 40-F) for the year ended December 31, 2003.  We consent to the
incorporation by reference in the Registration Statements (Form S-8 Nos.
33-47673, 333-520, 333-9076 and 333-12910) pertaining to the Employee Incentive
Stock Option Plan (1982) of NOVA Chemicals Corporation of our report dated
February 12, 2004 with respect to the consolidated financial statements of NOVA
Chemicals Corporation included in the Annual Report (Form 40-F) for the year
ended December 31, 2003.  We consent to the
incorporation by reference in the Registration Statement (Form S-8 No.
333-9078) pertaining to the Employee Savings and Profit Sharing Plan for
Canadian Employees of NOVA Chemicals Corporation of our report dated February
12, 2004 with respect to the consolidated financial statements of NOVA
Chemicals Corporation included in the Annual Report (Form 40-F) for the year
ended December 31, 2003.  We consent to the
incorporation by reference in the Registration Statement (Form S-8 No.
33-86218) pertaining to the Employee Savings and Profit Sharing Plan for NOVA
Chemicals Inc. (formerly Polysar Incorporated) of our report dated February 12,
2004 with respect to the consolidated financial statements of NOVA Chemicals
Corporation included in the Annual Report (Form 40-F) for the year ended
December 31, 2003.  We consent to the
incorporation by reference in the Registration Statement (Form S-8 No.
33-77308) pertaining to the Director Share Purchase Plan of NOVA Chemicals
Corporation of our report dated February 12, 2004 with respect to the
consolidated financial statements of NOVA Chemicals Corporation included in the
Annual Report (Form 40-F) for the year ended December 31, 2003.    
   We consent to the
incorporation by reference in the Registration Statement (Form S-8 No.
333-11280) pertaining to the Beaver Valley Hourly Plan of NOVA Chemicals
Corporation of our report dated February 12, 2004 with respect to the
consolidated financial statements of NOVA Chemicals Corporation included in the
Annual Report (Form 40-F) for the year ended December 31, 2003.  We consent to the
incorporation by reference in the Registration Statement (Form S-8 No.
333-109424) pertaining to the Restricted Stock Unit Plan of NOVA Chemicals
Corporation of our report dated February 12, 2004 with respect to the
consolidated financial statements of NOVA Chemicals Corporation included in the
Annual Report (Form 40-F) for the year ended December 31, 2003.  We consent to the
incorporation by reference in the Registration Statement (Form F-9 No.
333-13824) pertaining to the registration of Debt Securities of NOVA Chemicals
Corporation of our report dated February 12, 2004 with respect to the
consolidated financial statements of NOVA Chemicals Corporation included in the
Annual Report (Form 40-F) for the year ended December 31, 2003.  We consent to the
incorporation by reference in the Registration Statement (Form F-10, Amendment
No 1, No. 333-113038) pertaining to the registration of Debt Securities of NOVA
Chemicals Corporation of our report dated February 12, 2004 with respect to the
consolidated financial statements of NOVA Chemicals Corporation included in
the Annual Report (Form 40-F) for the year ended December 31, 2003.    Calgary, Canada March 15, 2004 Chartered Accountants  2