**302 Certification** **Exhibit 12**I, Fujio Mitarai, certify that: 1. I have reviewed this annual report on Form 20-F of Canon Inc.;  2. Based on my knowledge, this report does not contain any untrue statement of amaterial fact or omit to state a material fact necessary to make the statements made, inlight of the circumstances under which such statements were made, not misleading withrespect to the period covered by this report;  3. Based on my knowledge, the financial statements, and other financial informationincluded 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 presentedin this report;  4. The company’s other certifying officer(s) and I are responsible for establishing andmaintaining 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 ActRules 13a-15(f) and 15d-15(f)) for the company and have: (a) Designed such disclosure controls and procedures, or caused suchdisclosure controls and procedures to be designed under our supervision, to ensurethat material information relating to the company, including its consolidatedsubsidiaries, is made known to us by others within those entities, particularlyduring the period in which this report is being prepared;  (b) Designed such internal control over financial reporting, or causedsuch internal control over financial reporting to be designed under oursupervision, to provide reasonable assurance regarding the reliability offinancial reporting and the preparation of financial statements for externalpurposes in accordance with generally accepted accounting principles;  (c) Evaluated the effectiveness of the company’s disclosure controls andprocedures and presented in this report our conclusions about the effectiveness ofthe disclosure controls and procedures, as of the end of the period covered bythis report based on such evaluation; and (d) Disclosed in this report any change in the company’s internal controlover financial reporting that occurred during the period covered by the annualreport that has materially affected, or is reasonably likely to materially affect,the company’s internal control over financial reporting; and 5. The company’s other certifying officer(s) and I have disclosed, based on our mostrecent evaluation of internal control over financial reporting, to the company’s auditorsand the audit committee of the company’s board of directors (or persons performing theequivalent functions): (a) All significant deficiencies and material weaknesses in the design oroperation of internal control over financial reporting which are reasonably likelyto adversely affect the company’s ability to record, process, summarize and reportfinancial information; and  (b) Any fraud, whether or not material, that involves management or otheremployees who have a significant role in the company’s internal control overfinancial reporting.       Date:April 4, 2007                 /s/ Fujio Mitarai       Fujio Mitarai      Chairman & CEO  
 

 
**302 Certification**  I, Toshizo Tanaka, certify that: 1. I have reviewed this annual report on Form 20-F of Canon Inc.;  2. Based on my knowledge, this report does not contain any untrue statement of amaterial fact or omit to state a material fact necessary to make the statements made, inlight of the circumstances under which such statements were made, not misleading withrespect to the period covered by this report;  3. Based on my knowledge, the financial statements, and other financial informationincluded 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 presentedin this report;  4. The company’s other certifying officer(s) and I are responsible for establishing andmaintaining 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 ActRules 13a-15(f) and 15d-15(f)) for the company and have: (a) Designed such disclosure controls and procedures, or caused suchdisclosure controls and procedures to be designed under our supervision, toensure that material information relating to the company, including itsconsolidated subsidiaries, is made known to us by others within those entities, particularlyduring the period in which this report is being prepared;  (b) Designed such internal control over financial reporting, orcaused such internal control over financial reporting to be designed under oursupervision, to provide reasonable assurance regarding the reliability offinancial reporting and the preparation of financial statements for externalpurposes in accordance with generally accepted accounting principles;  (c) Evaluated the effectiveness of the company’s disclosure controlsand procedures and presented in this report our conclusions about theeffectiveness of the disclosure controls and procedures, as of the end of theperiod covered by this report based on such evaluation; and (d) Disclosed in this report any change in the company’s internalcontrol over financial reporting that occurred during the period covered by theannual report that has materially affected, or is reasonably likely tomaterially affect, the company’s internal control over financial reporting; and 6. The company’s other certifying officer(s) and I have disclosed, based on our mostrecent evaluation of internal control over financial reporting, to the company’s auditorsand the audit committee of the company’s board of directors (or persons performing theequivalent functions): (a) All significant deficiencies and material weaknesses in the design oroperation of internal control over financial reporting which are reasonably likelyto adversely affect the company’s ability to record, process, summarize and reportfinancial information; and  (b) Any fraud, whether or not material, that involves management or otheremployees who have a significant role in the company’s internal control overfinancial reporting.       Date:April 4, 2007                 /s/ Toshizo Tanaka       Toshizo Tanaka      Executive Vice President & CFO