The O’Sullivan Beach Football Club was an Australian rules football club originally formed in 1977, initially just as an U/13 team in the Southern Football League, gradually building up their teams over the following years.

In 1981 they fielded their first senior team, in the Southern Football League Division 2 Reserves competition, and in the following season entered the Division 2 A-Grade competition.

O’Sullivan Beach were promoted to the SFL Division 1 competition for the first time in 1987, but dropped to Division 2 after two seasons.

[1] O’Sullivan Beach merged with the Lonsdale Football Club at the end of the 2001 to form the O'Sullivan Beach-Lonsdale Football Club for the following season.

[1] O'Sullivan Beach FC produced two Australian Football League (AFL) players, Craig McRae (Brisbane Lions, Brisbane Bears) and Mark Viska (Adelaide).