**Exhibit 31**

**CERTIFICATIONS**

I, Peter Barnes, certify that:

1.

I have reviewed this amendment to the annual report on Form 40-F of Silver Wheaton Corp.; 

2.

Basedon my knowledge, this report does not contain any untrue statement of amaterial fact or omit to state a material fact necessary to make thestatements made, in light of the circumstances under which suchstatements were made, not misleading with respect to the period coveredby this report;

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 issuer as of, and for, the periods presented in this report; 

4.

The  issuer’s other certifying officer(s) 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)) for the issuer  and have:

(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 issuer, 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; 

(b)

Designed  such internal control over financial reporting, or caused such internal  control over financial reporting to be designed under our supervision,  to provide reasonable assurance regarding the reliability of financial  reporting and the preparation of financial statements for external  purposes in accordance with generally accepted accounting principles;   

(c)

Evaluated  the effectiveness of the issuer’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; and

(d)

Disclosed  in this report any change in the issuer’s internal control over  financial reporting that occurred during the period covered by the  annual report that has materially affected, or is reasonably likely to  materially affect, the issuer’s internal control over financial  reporting; and

5.

The  issuer’s other certifying officer(s) and I have disclosed, based on our  most recent evaluation of internal control over financial reporting, to  the issuer’s auditors and the audit committee of the issuer’s board of  directors (or persons performing the equivalent functions): 

(a)

All  significant deficiencies and material weaknesses in the design or  operation of internal control over financial reporting which are  reasonably likely to adversely affect the issuer’s ability to record,  process, summarize and report financial information; and

(b)

Any  fraud, whether or not material, that involves management or other  employees who have a significant role in the issuer’s internal control  over financial reporting.

 

Date:  February 8, 2008

/s/ Peter Barnes

Peter Barnes

President and Chief Executive Officer

----

**CERTIFICATIONS**

I, Nolan Watson, certify that:

1.

I have reviewed this annual report on Form 40-F of Silver Wheaton Corp.;

2.

Basedon my knowledge, this report does not contain any untrue statement of amaterial fact or omit to state a material fact necessary to make thestatements made, in light of the circumstances under which suchstatements were made, not misleading with respect to the period coveredby this report;

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 issuer as of, and for, the periods presented in this report;   

4.

The  issuer’s other certifying officer(s) 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)) for the issuer  and have:

(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 issuer, 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; 

(b)

Designed  such internal control over financial reporting, or caused such internal  control over financial reporting to be designed under our supervision,  to provide reasonable assurance regarding the reliability of financial  reporting and the preparation of financial statements for external  purposes in accordance with generally accepted accounting principles;   

(c)

Evaluated  the effectiveness of the issuer’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; and

(d)

Disclosed  in this report any change in the issuer’s internal control over  financial reporting that occurred during the period covered by the  annual report that has materially affected, or is reasonably likely to  materially affect, the issuer’s internal control over financial  reporting; and

5.

The  issuer’s other certifying officer(s) and I have disclosed, based on our  most recent evaluation of internal control over financial reporting, to  the issuer’s auditors and the audit committee of the issuer’s board of  directors (or persons performing the equivalent functions): 

(a)

All  significant deficiencies and material weaknesses in the design or  operation of internal control over financial reporting which are  reasonably likely to adversely affect the issuer’s ability to record,  process, summarize and report financial information; and

 

 

 

 

 

 

 

(b)

Anyfraud, whether or not material, that involves management or otheremployees who have a significant role in the issuer’s internal controlover financial reporting.

Date:  February 8, 2008

/s/ Nolan Watson

Nolan Watson

Chief Financial Officer