EX-32.1 WILLIAM T. MONAHAN, INTERIM CHIEF EXECUTIVE OFFICER, SECTION 906 CERTIFICATION
Published on November 14, 2006
Exhibit 32.1
CERTIFICATION
Pursuant to 18 U.S.C. Section 1350, the undersigned officer of Novelis Inc. (the Company),
hereby certifies that the Companys Quarterly Report on Form 10-Q for the period ended September
30, 2006 (the Report) fully complies with the requirements of Section 13(a) or Section 15(d), as
applicable, of the Securities Exchange Act of 1934, as amended, and that the information contained
in the Report fairly presents, in all material respects, the financial condition and results of
operations of the Company.
| /s/ William T. Monahan | ||||
| William T. Monahan | ||||
| Interim Chief Executive Officer (Principal Executive Officer) |
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Date:
November 13, 2006
The foregoing certification is being furnished solely pursuant to 18 U.S.C. Section 1350 and
is not being filed as part of this report.