| Acronym | Definition |
|---|
| CLUG➣Clemson Linux User Group |
| CLUG➣Calgary Linux Users Group |
| CLUG➣Cincinnati GNU/Linux Users Group |
| CLUG➣Chemnitzer Linux User Group (Internet forum; Germany) |
| CLUG➣Cochrane Library User Group |
| CLUG➣Caltanissetta Linux User Group (Italy) |
| CLUG➣Carolina Linux Users Group |