| Acronym | Definition |
|---|
| CALC | Calculator |
| CALC | Calculation |
| CALC | Calculus |
| CALC | Calculate |
| CALC | Calculated |
| CALC | Citrix Authorized Learning Center |
| CALC | Cumbre de América Latina y el Caribe Sobre Integración y Desarrollo (Spanish: Summit of Latin America and the Caribbean on Integration and Development) |
| CALC | Clergy And Laity Concerned |
| CALC | Community Alliance of Lane County (Eugene, OR) |
| CALC | Customer Access Line Charge |
| CALC | Cambridgeshire Association of Local Councils |
| CALC | Computational Approaches to Linguistic Creativity (Workshop) |
| CALC | Cryptography and Lattices Conference |
| CALC | Carrier Access Line Charge |
| CALC | Cargo Acceptance & Load Control |