Charles Frederick Lettow (February 10, 1941 – December 24, 2024) was an American lawyer who served as a judge of the United States Court of Federal Claims.

He then joined the law firm of Cleary, Gottlieb, Steen & Hamilton, first as an associate from 1973 to 1976, and then as a partner until 2003.

He also was chairman of the Environmental Controls Committee of the Section of Business Law, American Bar Association, from 1983 to 1987.

[2] He became a member of the American Law Institute in 1994,[2] and in 1997 and 1998, he received awards from the National State and Local Legal Center for amicus briefs in the U.S. Supreme Court.

[2] On July 14, 2003, Lettow was appointed a judge of the United States Court of Federal Claims.