Antoin is an Irish masculine given name that is a derivative of Antonius that is commonly used in Ireland. In Irish (Gaeilge) it is rendered Antóin. 1 It may refer to:
- Antoin Essomba (born 2003), Cameroonian footballer
- Antoin McFadden (born c.1989/90), Irish Gaelic football coach and player
- Antoin Miliordos (1924–2012), Greek alpine skier
- Antoin "Tony" Rezko (born 1955), American businessman
- Antoin Sevruguin (1851–1933), Iranian photographer