Bonnar is a surname and may refer to:
- Colm Bonnar (born 1964), Irish former hurling player
- Conal Bonnar (born 1970), Irish hurling player
- Cormac Bonnar (born 1959), Irish hurling player
- Joanne Bonnar, Scottish TV news reporter
- Joseph Bonnar (born 1948), English rugby league footballer
- Mark Bonnar (born 1968), Scottish actor
- Stephan Bonnar (born 1977), American mixed martial arts fighter