Captain Roscoe Carlyle Bulmer, USN (4 November 1874 – 5 August 1919) was an officer in the United States Navy. His active-duty career extended from the 1890s until just after World War I. Born in Virginia City, Nevada, Bulmer graduated from the Naval Academy in 1894. After World War I, he served as United States naval representative at a conference which met at the British Admiralty to consider clearing the seas of mines after the war. On 5 January 1919 he assumed command of that operation. His zeal and courage, combined with a sound knowledge of his profession, contributed greatly to the success of the mine force.