The chevron butterflyfish (Chaetodon trifascialis), also known as chevroned butterflyfish, triangulate butterflyfish or V-lined butterflyfish, is a species of marine ray-finned fish, a butterflyfish belonging to the family Chaetodontidae. It has a wide Indo-Pacific distribution.
Chevron butterflyfish should not be confused with melon butterflyfish (Chaetodon trifasciatus), three-striped butterflyfish (Chaetodon tricinctus), or three-banded butterflyfish (Chaetodon robustus).