Exhibit 31.2



CERTIFICATIONS PURSUANT TO SECTION 302OFTHE SARBANES-OXLEY ACT OF 2002



I, Christopher J. Reynolds, VP Finance and CFO, certify
that:



1. I have reviewed this Annual
Report on Form 40-F of Seabridge Gold Inc. (the “Issuer”):



2.
Based on my knowledge, this annual 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;



3.
Based on my knowledge, the financial statements, and other financial information included in this annual 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)) and internal control over financial reporting (as defined in Exchange
Act Rules 13a-15(f) and 15d-15(f)) 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 annual
report is being prepared;
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|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;
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|c) |  | Evaluated the effectiveness of the Issuer's disclosure controls and procedures and
presented in this annual report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end
of the period covered by this annual report based on such evaluation; and
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|d) |  | Disclosed in this annual 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
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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
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|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.
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|Date: March 29, 2017 | By:	/s/ Christopher J. Reynolds

Christopher J. Reynolds
VP Finance and CFO
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