O'Donovan Rossa GAC (Irish: CLG Ó Donnabháin Rosa) is a Gaelic Athletic Association club based in Belfast, County Antrim.

The club is a member of the Antrim GAA and currently fields teams in Hurling, Gaelic football, Camogie and Handball.

O'Donovan Rossa GAC was founded in 1916 at Bunkers Hill, now the site of Kennedy's old bakery in Beechmount Avenue on the Falls Road.

In an epic game played in Limerick, Rossa emerged as one point winners against a Patrickswell side that included greats like Gary Kirby and Ciarán Carey.

The team eventually lost in the All Ireland Final at Croke Park to a Buffers Alley side led by Tony Doran.