List of United States Navy losses in World War II

List of United States Navy and Coast Guard ships lost during World War II, from 31 October 1941 to 31 December 1946, sorted by type and name. This listing also includes constructive losses, which are ships that were damaged beyond economical repair and disposed of. The list does not include United States Merchant Marine ships, many which had United States Navy Armed Guard units.

Battleships (BB)
Note - USS Utah (AG-16) (ex BB-31) is not listed as a battleship as it had been converted to an anti-aircraft gunnery training ship by the time of her sinking; it is included in the sub-section "Other auxiliaries". During the Attack on Pearl Harbor, USS West Virginia (BB-48) and USS California (BB-44) were sunk while USS Nevada (BB-36) was beached, however, all three ships were refloated, rebuilt and returned to service.

Patrol torpedo boats (PT)
20 PT boats were destroyed by grounding, another 9 were sunk by friendly fire and 10 more were lost due to other accidents.

District patrol vessels (YP)
Only four YPs were lost due to enemy action. Almost all others lost were due to accidents.

Coast Guard cutters
Four, possibly five, Coast Guard cutters were lost due to enemy action, all others were lost in accidents.