BLA
- Bachelor of Liberal Arts
- Balochistan Liberation Army
- Baltimore and Annapolis Railroad
- Basolateral amygdala
- Bavarian Liberation Army
- Biblioteca Las Américas
- Biologics license application
- Bla, Ivory Coast
- Bla, Mali
- Blaa
- Black Liberation Army
- Blah (disambiguation)
- Blue Air
- Blå
- Boston Latin Academy
- Brainerd Lakes Area
- British Laryngological Association
- British Liberation Army
- General José Antonio Anzoátegui International Airport
- Siksika language