Colonel Charles Perry Stacey OC OBE CD FRSC (30 July 1906 – 17 November 1989) was a Canadian historian and university professor.

He served as the official historian of the Canadian Army in the Second World War and published extensively on military and political matters.

He served in the United Kingdom for most of the war, headed a team dedicated to collecting and collating information for future historians, and wrote contemporary reports.

He benefited from his access to the major Canadian military and political figures involved in the war, both during the conflict and afterwards, when the official histories were being finalized.

Stacey also wrote a critical analysis of the writing process of the Official History of World War I (only one of the projected eight volumes by the original author ever appeared in print).

Stacey Prize has been given by the Canadian Committee for the History of the Second World War "for distinguished publications on the twentieth-century military experience.