John Allan Swasey (born October 18, 1964) is an American voice actor, ADR Director, and script writer who works at ADV Films, Funimation and Sentai Filmworks.

He has provided voices for English-language versions of Japanese anime series and video games. His most notable roles include Gendo Ikari in the Rebuild of Evangelion films, Sir Crocodile in the Funimation dub of One Piece, Lord Death in Soul Eater, and Van Hohenheim in Fullmetal Alchemist: Brotherhood.

Outside of voice acting, Swasey is also the founder of Anime Dallas anime convention which debuted in 2018.