Bullen is a surname, and may refer to:
- Arthur Henry Bullen (1857-1920), English editor, publisher, and a specialist in 16th and 17th century literature
- Charles Bullen, British military officer
- Charles Bullen (Utah politician), American politician
- Keith Edward Bullen (1906-1976), New Zealand-born mathematician and geophysicist
- Lee Bullen (born 1971), Scottish professional footballer
- Luke Bullen (born 1973), English drummer and percussionist
- Marc Bullen (born 1982), Australian rules footballer
- Nicholas Bullen (born 1968), English musician and artist
- Stafford Bullen (1925-2001), circus proprietor and co-founder of the African Lion Safari, Warragamba and, Bullen's Animal World.
- William Bullen (18th century), English cricketer