加拿大人县（Canadian County, Oklahoma）是美国奥克拉荷马州中部的一个县。面积2,344平方公里。根据美国2000年人口普查，共有人口87,697人。县治埃尔里诺 (El Reno)。州府奥克拉荷马市小部分位于本县。

成立于1889年。县名来自加拿大河。

Canadian County is a county located in the U.S. state of Oklahoma. As of the 2010 census, the population was 115,541, making it the fifth-most populous county in Oklahoma. Its county seat is El Reno. The county is named for the Canadian River.

Canadian County is also part of the Oklahoma City, OK Metropolitan Statistical Area.