Exhibit 12.1



Certification of Chief Executive Officer Pursuant to Section 302 of the
Sarbanes-Oxley Act of 2002



I, Charles G. Preble, certify that:



| | 1. | I have reviewed this annual report on Form 20-F of Peru Copper Inc.;
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| | 2. | Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the
circumstances under which such statements were made, not misleading with respect to the period covered by this report;
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| | 3. | Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of
operations and cash flows of the company as of, and for, the periods presented in this report;
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| | 4. | The companys other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and
15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the company and have:
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|(a) | Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information
relating to the company, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
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|(b) | Evaluated the effectiveness of the companys disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls
and procedures, as of the end of the period covered by this report based on such evaluation.
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Date: June 30, 2005





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|/s/ Charles G. Preble  
|Charles G. Preble      
|Chief Executive Officer