A wide variety of animals have names describing them as black-legged.
- Birds:
- Amphibians:
- Invertebrates:
- Arthropods
- Insects
- Blacklegged tick, Ixodes scapularis
- Black-legged water-snipefly, Atherix marginata
- Black-legged horsefly, Hybomitra micans
- Violet black-legged robberfly, Dioctria atricapilla
- Blackleg tortoiseshell, another name for the large tortoiseshell butterfly
- Insects
- Arthropods