USS Avalon may refer to more than one United States Navy ship:
, a motorboat acquired for use as a patrol boat in 1917 and returned to her owner in 1918 perhaps without having been commissioned; , a steamer in commission from 1918 to 1919, renamed USS Avalon for her last three days under U.S. Navy control; DSRV-2 Avalon, a deep submergence rescue vehicle launched in 1971 and decommissioned in 2000.