Charles Constantine (13 November 1846 – 5 May 1912) was a Canadian North-West Mounted Police officer and superintendent, from Bradford, Yorkshire.
After serving in Banff and Regina, he was sent to examine conditions in the Yukon district in 1894 as the government was concerned about the influx of American miners and the liquor trade.
In the following year, he went back to the Yukon with a force of 20 men who were in place when the Klondike Gold Rush started in 1897.
Constantine's efforts ensured that law was maintained during the gold rush, that Canadian sovereignty was assured and helped create the Mounties' international reputation.
He left the Yukon in 1898, replaced by Sam Steele and returned to the prairies after being promoted to Superintendent.