The 877th Bombardment Squadron is a former United States Army Air Forces unit. It was activated in November 1943, equipped with Boeing B-29 Superfortress bombers, and assigned to the 499th Bombardment Group. After training in the United States, it deployed to Saipan, where it participated in the strategic bombing campaign against Japan, earning two Distinguished Unit Citations. After V-J Day, it returned to the United States, where it was inactivated at March Field, California on 16 February 1946.