Marg Downey (gebore 1961) is 'n Australiese aktrise, skryfster, en vervaardiger. Sy is bekend vir haar rolle in die rolprente Queen of the Damned (2002) en Under the Radar (2004), en in die televisiereekse Something Stupid (1998) en Back in Very Small Business (2018).
- 2002: Queen of the Damned
- 2004: Under the Radar
- 1986: The D Generation
- 1988: The D Generation Goes Commercial
- 1989: Fast Forward
- 1992: Bligh
- 1997: Get a Life
- 1997: Li'l Elvis Jones and the Truckstoppers
- 1998: Something Stupid
- 1998: The Silver Brumby
- 2000: Sit Down, Shut Up
- 2000: The Bob Downe Show
- 2000: The New Adventures of Ocean Girl
- 2000: Gloria's House
- 2002: Kath & Kim
- 2005: Let Loose Live
- 2006: Dogstar
- 2018: Back in Very Small Business
- 2018: Kitty Is Not a Cat
- 1991: Turn It Up
- 1993: A Royal Commission Into the Australian Economy
- 1993: The Making of Nothing
- 1994: Economy Class
- 1995: The Search for Christmas
- 2012: Exchange Student Zero
- 2016: Dogstar: Christmas in Space
- 1997: The D Generation: The Bottom Drawer
