Saint Helena Butterflyfish
Chaetodon sanctaehelenae
- Least concern
- Card rarity: Common
- Fish

The Saint Helena butterflyfish, also known as the cunningfish, is a species of marine ray-finned fish, a butterflyfish belonging to the family Chaetodontidae. It is found in the Atlantic Ocean around the islands of St Helena and Ascension Island.
Classification
- Class
- Actinopterygii
- Order
- Acanthuriformes
- Family
- Chaetodontidae
- Genus
- Chaetodon