| Acronym | Definition |
|---|
| CLAC | Christian Labour Association of Canada |
| CLAC | Clergy and Laity Concerned |
| CLAC | Centre de Lecture et d'Animation Culturelle (French: Center for Reading and Cultural Activity; Cameroon) |
| CLAC | Convergence des Luttes Anti-Capitalistes (Canada) |
| CLAC | Civil Liberties Action Committee (Guyana) |
| CLAC | Central Laboratory for Agricultural Climate |
| CLAC | Comunità per le Libere Attività Culturali |
| CLAC | Canal Lands Advisory Committee |
| CLAC | Caulfield Little Athletics Centre (Australia) |
| CLAC | Clean, Lubricate, Adjust, and Check (camera repair) |
| CLAC | Light Attack Craft Carrier (Honor Harrington science fiction novels) |