Sir Charles William Clanan Marr KCVO, DSO, MC (23 March 1880 – 20 October 1960) was an Australian politician, engineer and soldier.

If we were to broadcast to the world that nearly 100 years ago the aborigines were treated in a dastardly way-and admittedly they were-we should do injury to our White Australia policy; whereas we wish to convince the world that we are as mindful of our black brethren as of the whites.In 1929, as an honorary minister in the Bruce–Page government, Marr was sent to represent Australia at the League of Nations.

On the journey to Europe he developed a friendship with Amanullah Khan, the recently deposed king of Afghanistan; they conversed in French.

Marr held a number of cabinet posts in the Bruce and Lyons governments, including Home and Territories, Works and Railways, Health and Repatriation.

He was made a Knight Commander of the Royal Victorian Order in 1934 for his role in organising the Australian tour of the Duke of Gloucester.