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                            May 30, 2023

       John Wasson
       Chief Executive Officer
       ICF International, Inc.
       1902 Reston Metro Plaza
       Reston, VA 20190

                                                        Re: ICF International,
Inc.
                                                            Form 10-K for the
Fiscal Year Ended December 31, 2022
                                                            Response dated May
12, 2023
                                                            File No. 1-33045

       Dear John Wasson:

               We have reviewed your May 12, 2023 response to our comment
letter and have the
       following comment. In our comment, we may ask you to provide us with
information so we may
       better understand your disclosure.

              Please respond to this comment within ten business days by
providing the requested
       information or advise us as soon as possible when you will respond. If
you do not believe our
       comment applies to your facts and circumstances, please tell us why in
your response.

              After reviewing your response to this comment, we may have
additional
       comments. Unless we note otherwise, our references to prior comments are
to comments in our
       May 1, 2023 letter.

       Form 10-K for the Fiscal Year Ended December 31, 2022

       Item 7. Management's Discussion and Analysis of Financial Condition and
Results of Operations
       Non-GAAP Measures
       Service Revenues, page 45

   1.                                                   We note your response
to comment 2. Your deduction of subcontractor and other direct
                                                        costs as if you were
acting as an agent in these transactions, appears to result in an
                                                        individually tailored
recognition method. Please revise your presentation to omit this
                                                        adjustment or tell us
why you believe it is appropriate. Refer to Question 100.04 of
                                                        Compliance and
Disclosure Interpretations on Non-GAAP Financial Measures.
 John Wasson
ICF International, Inc.
May 30, 2023
Page 2

       You may contact Tony Watson at (202) 551-3318 or Joel Parker at (202)
551-3651 if you
have questions regarding comments on the financial statements and related
matters.



FirstName LastNameJohn Wasson                            Sincerely,
Comapany NameICF International, Inc.
                                                         Division of
Corporation Finance
May 30, 2023 Page 2                                      Office of Trade &
Services
FirstName LastName