Red tail
- Ceriagrion aeruginosum
- Customer relationship management
- GPS tracking
- Northwest Airlines
- Red Tail Project
- Red Tails
- Red tailed tinfoil barb
- Red-tailed Barbel
- Red-tailed black cockatoo
- Red-tailed black shark
- Red-tailed boa
- Red-tailed hawk
- Red-tailed sportive lemur
- Red-tailed tropicbird
- Redtail Nature Awareness
- Redtail Telematics Corporation
- Redtail barb
- Redtail catfish
- Tuskegee Airmen
- Warriors (novel series)