| Club Gaa: | O'Connor's GAC Glack |
| Crest: | GlackCrestwName.png |
| Irish: | CLG Ó Conchobhair, An Glaic |
| County: | Derry |
| Province: | Ulster |
| Grounds: | Brolly Park (Páirc Ó Bhrolaigh) |
| Colours: | Maroon and Blue |
| Founded: | 1921 |
| Coordinates: | 55.0233°N -7.0306°W |
| Pattern La: | _navyborder |
| Pattern B: | _lightbluehorizontal |
| Pattern Ra: | _navyborder |
| Pattern Sh: | _3stripesnavy |
| Pattern So: | _sky_blue_on_top |
| Leftarm: | 6C160D |
| Body: | 800000 |
| Rightarm: | 6C160D |
| Shorts: | 001A4C |
| Socks: | 001A4C |
| Kit1: | Football |
| Kit2: | Camogie |
| Pattern La2: | _navy_hoops |
| Pattern Ra2: | _navy_hoops |
| Leftarm2: | 001A4C |
| Body2: | 71bbe8 |
| Rightarm2: | 001A4C |
| Shorts2: | 800000 |
| Socks2: | 800000 |
O'Connor's GAC Glack (ga|CLG Uí Chonchúir, An Glaic) is a Gaelic Athletic Association club based in the Glack/Ballykelly area in County Londonderry, Northern Ireland. The club is a member of Derry GAA and currently caters for Gaelic football and Camogie.
Underage teams up to U-12's play in North Derry league and championships, from U-14 upwards teams compete in All-Derry competitions. Glack have won the Derry Intermediate Football Championship once and the Derry Junior Football Championship three times.
Glack fields Gaelic football teams at Under-8, Under-10, Under-12, Under-14, Under-16, Minor, Reserve and Senior levels. The Senior team competes in the Derry Junior Football Championship and Division 2 of the Derry ACFL.
The camogie club is called St Finlough’s Camogie Club Glack (ga|'''Chlub an Camógaíocht Naomh Fionnloch Glaic''') and fields teams at various age-groups. Notably, Glack is the home club of Junior All-Ireland crowned camogie player and captain Brigid Carmichael (née McLaughlin)
The club was founded in 1921. One of the club's major honours came in 1971 when it won the Derry Minor Football Championship. They won the Derry Junior Football Championship a year later before winning the Derry Intermediate Football Championship in 1974. After dropping back down to Junior grade, Glack won the Derry Junior Championship for a second time in 1981. In 2019 the club won their third Derry Junior Championship defeating Drum to end a 39 year wait for a County Championship.
Note: The above lists may be incomplete. Please add any other honours you know of.