Callum is a Scottish given name and surname.
Callum may also refer to:
Callum (Thrace), a settlement and station (mutatio) of ancient Thrace, inhabited during Byzantine times. Its site is located east of Selymbria in European Turkey. Callum, Ontario, Canada Callum (bivalve), a part of certain bivalve seashells
See also Calum, orthographic variant of the name Callum Brae, a suburb in Hamilton, New Zealand