Arum is a plant genus.
Arum may also refer to:
Surname or given name
- Areum (name), also spelled Arŭm, Korean feminine given name (including a list of people with the name)
- Bob Arum (born 1931), American lawyer and businessman; founder of boxing promotion company Top Rank
- Richard Arum (born 1963), American sociology professor
- Arum (Vala), one of the Valar in J. R. R. Tolkien's legendarium
- Araceae, a family of plants called the "arum family"