Japanese destroyer Ōnami (1942)

The Ōnami (大波) was a Yūgumo-class destroyer of the Imperial Japanese Navy. Her name means "Billow Wave" (Big Rough Waves).

On the night of 24–25 November 1943, Ōnami led a troop transport/evacuation run to Buka Island. In the Battle of Cape St. George, she was torpedoed by USS Charles Ausburne (DD-570), and USS Claxton (DD-571) and/or USS Dyson (DD-572), 55 miles (100 km) east-southeast of Cape St. George (-5.25°N, 153.81667°W). Ōnami blew up and sank with all hands, including ComDesDiv 31 (Captain Kagawa Kiyoto). Commander Kikkawa was posthumously promoted two ranks, one of the few IJN destroyer skippers so honored.