Mannum (disambiguation)
Mannum is a town in the Australian state of South Australia.
Mannum may also refer to.
- District Council of Mannum, a former local government area in South Australia
 - Mannum Waterfalls, a waterfall of Australia
 - Mannum Football Club, a South Australian football club
 - Mannum Formation, a geological formation in South Australia
 - Mannum Rowing Club, an Australian rowing club