- CALB stands for Calbindin
- CALB stands for Candida Antarctica Lipase B (organic chemistry)
- CALB stands for Communauté d’Agglomération du Lac du Bourget (French: Agglomeration Community of Lac du Bourget; Lac du Bourget, France)
- CALB stands for Communication-Aware Load Balancing (computation)
- CaLB stands for Calcium-Dependent Lipid Binding
- CALB stands for Computer-Aided Line Balancing (est. 1969; Illinois Institute of Technology)
- CALB stands for Citizens Against Legal Blackmail (California)
- CALB stands for Club Athlétique l’Hay les Roses Badminton (French: L’Hay les Roses Badminton Athletic Club; L’Hay les Roses, France)
CALB