Fair Isaac (FICO) 10-Q/A 2023 Q3 Quarterly report (amended)

EXHIBIT 31.1

CERTIFICATIONS

I, William J. Lansing, certify that:

1.I have reviewed this Amendment No. 1 to quarterly report on Form 10-Q/A of Fair Isaac Corporation; and

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.

Date: September [__], 2023

/s/ WILLIAM J. LANSING

William J. Lansing

Chief Executive Officer