The 1st Maine Veteran Infantry Regiment was an infantry regiment that served in the Union Army during the American Civil War.

[1] The 1st Maine Veteran Infantry mustered out of service June 28, 1865, in Washington, D.C..[1] Skirmishes near Charleston, Va., August 21–22, 1864.

Demonstration on Gilbert's Ford, Opequart, September 13.

March to Washington, D.C., December 9, then moved to Petersburg, Va.

March to Danville, Va., and provost duty there until June.