Atlantic League may refer to one of the following professional sports leagues:
Atlantic League (1896–1900), a professional baseball league active from 1896 to 1900Atlantic League (1914), a professional baseball league active in 1914Atlantic League (1994–1996), one of the ice hockey leagues that formed the Six Nations TournamentAtlantic League of Professional Baseball, an independent professional baseball league founded in 1998Atlantic League (football), a proposed European association football competition reference