Major-General Louis James Lipsett CB CMG (14 June 1874 – 14 October 1918), was a senior officer in the British Army and Canadian Expeditionary Force during the First World War. He commanded the 3rd Canadian Division during some of the bitterest battles of the war, taking over in 1916 after his predecessor, Malcolm Mercer, was killed. In 1918, Lipsett took command of the British 4th Division. Less than a month before the end of the war, during a reconnaissance mission observing German positions along the River Selle, Lipsett was killed.