David Ewan Marr FAHA is an Australian journalist, author, and progressive political and social commentator. His areas of expertise include the law, Australian politics, censorship, the media, and the arts. He writes for The Monthly, The Saturday Paper, and Guardian Australia.

The Monthly is an Australian national magazine of politics, society and the arts, which is published eleven times per year on a monthly basis except the December/January issue. Founded in 2005, it is published by Melbourne property developer Morry Schwartz.