USS Indianapolis (CL/CA-35) was a Portland-class heavy cruiser of the United States Navy, named for the city of Indianapolis, Indiana. Launched in 1931, the vessel served as the flagship for the commander of Scouting Force 1 for eight years, then as flagship for Admiral Raymond Spruance in 1943 and 1944 while he commanded the Fifth Fleet in battles across the Central Pacific during World War II.