| Type: | hamlet, townland |
| Pushpin Map: | United Kingdom |
| Coordinates: | 54.9931°N -7.0411°W |
Glack [1] is a hamlet and townland in County Londonderry, Northern Ireland. It is 4 km south of Ballykelly, in a raised spot overlooking Lough Foyle. In the 2001 Census it had a population of 183 people. It is situated within Causeway Coast and Glens district.
Glack is made up of three clusters of buildings. It has a primary school (St Finlough's, in neighbouring Sistrakeel townland) and a business called Paragon Health Ltd.[2]
It has a Gaelic club called Glack GAC, a Community Association and numerous other clubs to include camogie, bowling and knitting clubs.