| Club Gaa: | St Brendan's GAA |
| Irish: | CLG Naomh Breandáin |
| County: | Dublin |
| Province: | Leinster |
| Nickname: | The Dark Force |
| Grounds: | Grangegorman |
| Founded: | 1920 |
| F1: | 0 |
| F2: | 0 |
| F3: | 0 |
| H3: | 1 |
| C3: | 0 |
| C2: | 0 |
| Pattern La: | _blackborder |
| Pattern B: | _thinblacksides |
| Pattern Ra: | _blackborder |
| Pattern Sh: | _yellowsides |
| Pattern So: | _3_stripes_yellow |
| Leftarm: | FFFF00 |
| Body: | FFFF00 |
| Rightarm: | FFFF00 |
| Shorts: | 000000 |
| Socks: | 000000 |
St Brendan's GAA is a Dublin GAA-affiliated Gaelic football club based in the Grangegorman area of the north of Dublin city, Ireland.
The club dates back (in one guise or another) to 1920. Founded in 1920 the club was firstly named the Richmond Asylum Hurling Club. The name was changed in 1923 to St Dympna‘s. The club became known as St Brendan’s in 1958 to coincide with the change in name of the hospital with which it is closely associated.
The most famous day in the club's history was probably the 1980 Dublin Senior Hurling Championship final win over Faughs.
The club competes in Division 7 of the Dublin hurling leagues.
The club competes in Division 5 and Division 10 of the Dublin leagues
A Ladies Football team was set up in the club in 2012 and started playing in the 2013 season. In 2016 The Ladies won their first trophy winning the Ladies Adult Football Division 9 League Title. In 2017 The team went one further by bring the first Ladies Football Championship to Grangegorman when winning the Junior F Championship. In 2018 there is now two Ladies Football teams in the club with the 1st team playing in Division 5 and the 2nd team in Division 8.In 2019, Both Ladies Football teams won their respective Junior Football Championships, the 1sts defeating Crumlin on August 31 in Junior C and the 2nds defeating Erin Go Brágh on September 4 in Junior H.
A juvenile section was set up in 2014 and there is now an academy catering for boys and girls aged 4–7 and teams up to U12. The Juvenile club is very active in the Dublin 7 community, providing coaching to local schools, running initiatives like Gaelic4Girls, and participating in events such as the Pride of Stoneybatter festival.
A camogie team was set up in 2021 and won a county championship in its first year of existence.