Charles Odilon Roger Rousseau, CC (6 February 1921 – 26 September 1986) was a Canadian ambassador, administrator and soldier. He was head of the Montreal Olympic Organizing Committee (COJO) for the 1976 Summer Olympics in Montreal.
He served in the Royal Canadian Air Force during World War II, but became a prisoner of war in 1942 until the war's end.
He was born in Trois-Pistoles, Quebec and died of cancer in Ottawa, Ontario. 1969–1972: Ambassador to the Central African Republic
1970–1972: Ambassador to Chad, Gabon, and Cameroon
1977–1981: Ambassador to the Dominican Republic and Venezuela
1981–1985: High Commissioner to New Zealand, Fiji, Kiribati, Tonga, Tuvalu, and Western Samoa