SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL OMB Number: 3235-0104 Estimated average burden hours per response: 0.5

1. Name and Address of Reporting Person* LANSING WILLIAM J (Last) (First) (Middle) 901 MARQUETTE AVENUE SUITE 3200 (Street) MINNEAPOLIS MN 55402 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 02/06/2006	3. Issuer Name and Ticker or Trading Symbol FAIR ISAAC CORP [ FIC ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director 10% Owner Officer (give title below) Other (specify below)	5. If Amendment, Date of Original Filed (Month/Day/Year)
			6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
No securities owned.	0	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

	Nancy E. Fraser, Attorney-in-fact	02/06/2006
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

 POWER OF ATTORNEY


KNOW ALL BY THESE PRESENTS, the undersigned

hereby constitutes and appoints ANDREA M. FIKE, NANCY E. FRASER, and

CHARLES M. OSBORNE, the undersigned's true and lawful attorney-in-fact
to:


1.	execute for and on behalf of the undersigned, in the
undersigned's
capacity as an officer and / or director of Fair Isaac
Corporation (the
"Company"), Forms 3, 4 and 5, including Form ID
application and
verification, in accordance with Section 16(a) of the
Securities Exchange
Act of 1934, as amended, and the rules and
regulations thereunder;


2.	do and perform any and all acts for and
on behalf of the undersigned
which may be necessary or desirable to
complete and execute any such Form
ID, Form 3, 4 or 5 and timely file
such form with the United States
Securities and Exchange Commission and
any stock exchange or similar
authority; and

3.	take any other
action of any type whatsoever in
connection with the foregoing which, in
the opinion of such
attorney-in-fact, may be of benefit to, in the best
interest of, or legally
required by, the undersigned, it being understood
that the documents
executed by such attorney-in-fact on behalf of the
undersigned pursuant to
this Power of Attorney shall be in such form and
shall contain such terms
and conditions as such attorney-in-fact may
approve in such
attorney-in-fact's discretion.

The undersigned
hereby grants to such
attorney-in-fact full power and authority to do and
perform any and every
act and thing whatsoever requisite, necessary, or
proper to be done in the
exercise of any of the rights and powers herein
granted, as fully to all
intents and purposes as the undersigned might or
could do if personally
present, with full power of substitution or
revocation, hereby ratifying
and confirming all that such
attorney-in-fact or
attorney-in-fact's
substitute or substitutes,
shall lawfully do or cause to be done by virtue
of this Power of Attorney
and the rights and powers herein granted. The
undersigned acknowledges
that the foregoing attorney-in-fact, in serving in
such capacity at the
request of the undersigned, is not assuming, nor is
the Company assuming,
any of the undersigned's responsibilities to comply
with Section 16 of
the Securities Exchange Act of 1934.

	This Power of
Attorney shall
remain in full force and effect until the undersigned is no
longer
required to file Forms 3, 4 and 5 with respect to the undersigned's

holdings of and transactions in securities issued by the Company, unless

earlier revoked by the undersigned in a signed writing delivered to the

foregoing attorney-in-fact.

	IN WITNESS WHEREOF, the undersigned
has
caused the Power of Attorney to be executed as of this 13th day of
January,
2006.




/s/ William J. Lansing