Antoin is an Irish masculine given name that is a derivative of Antonius that is commonly used in Ireland.[1] It may refer to:
- Antoin Essomba (born 2003), Cameroonian footballer
- Antoin McFadden (born c. 1989/1990), Irish Gaelic football coach and player
- Antoin Miliordos (1924–2012), Greek alpine skier
- Antoin "Tony" Rezko (born 1955), an American businessman
- Antoin Sevruguin (1851–1933), Iranian photographer