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, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person *   Reiff Isabel S. 2. Date of Event Requiring Statement (Month/Day/Year) 03/08/2010 3. Issuer Name and Ticker or Trading Symbol ICF International, Inc. [ICFI] (Last) (First) (Middle) 9300 LEE HIGHWAY 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Senior Vice President 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) FAIRFAX, VA 22031 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) 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) Common Stock 7,872 D Â

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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 of Derivative Security: 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
Restricted Stock Units	  (1)	  (1)	Common Stock	1,666	$ (2)	D	Â
Restricted Stock Units	  (3)	  (3)	Common Stock	3,821	$ (2)	D	Â

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Reiff Isabel S. 9300 LEE HIGHWAY FAIRFAX, VA 22031	Â	Â	  Senior Vice President	Â

Signatures

/s/ James J. Maiwurm, Attorney-in-fact		03/11/2010
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	On November 12, 2007, 5,000 restricted stock units were granted pursuant to the 2006 Long-Term Equity Incentive Plan. These restricted stock units vest over a period of 3 years at 33 1/3% per year beginning one year from the date of grant. At the time of this filing, 1,666 restricted stock units remain unvested.
(2)	Each restricted stock unit is the economic equivalent of one share of ICF International, Inc. Common Stock.
(3)	On May 8, 2009, 3,821 restricted stock units were granted pursuant to the 2006 Long-Term Equity Incentive Plan. These restricted stock units vest over a period of 5 years at 20% per year beginning one year from the date of grant.

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