Blackleg
- Animals named as black-legged
- Black Legion (disambiguation)
- Black-legged kittiwake
- Black-legged seriema
- Blackledge (disambiguation)
- Blackleg (Brassica)
- Blackleg (disease)
- Blackleg (potatoes)
- Blackleg labour
- Blacklegs (horse)
- Blackley
- Card sharp
- HMS Coventry (D118)
- Ixodes pacificus
- Ixodes scapularis
- Leptosphaeria maculans
- Opelousa people
- Pectobacterium carotovorum
- Pythium
- Royoporus badius
- Scurvy