371st may refer to:
371st Bombardment Squadron, inactive United States Air Force unit 371st Engineer Construction Battalion or 371st Engineer Battalion, activated as a Special Service Regiment in the United States Army in 1944 371st Fighter Group or 142nd Fighter Wing, a unit of the Oregon Air National Guard, stationed at Portland Air National Guard Base, Oregon 371st Fighter Squadron 371st Infantry Regiment (United States), an African American regiment, nominally a part of the 93rd Infantry Division (Colored), that served in World War I 371st Sustainment Brigade (United States), Ohio Army National Guard sustainment Brigade
See also 371 (number) 371, the year 371 (CCCLXXI) of the Julian calendar 371 BC