- CALP stands for Cognitive Academic Language Proficiency
- CALP stands for Certified Academic Language Practitioner (Academic Language Therapy Association)
- CALP stands for Cristalleria Artistica La Piana (All the World, Crystalware)
- CALP stands for Certified Ambassador Loan Processor (National Association of Mortgage Processors)
- CALP stands for Calsenilin-Like Protein
- CALP stands for Centro de Astrofísica en la Palma (Canary Islands, Spain)
- CALP stands for Workshop on Computer-Aided Language Processing
- CALP stands for Civilian Aircraft Landing Permit
CALP