John Bautista Rogers Cooper (born John Rogers Cooper, September 11, 1791, Alderney, British Channel Islands – June 2, 1872, San Francisco, California).
Raised in Massachusetts in a maritime family, he came to the Mexican territory of Alta California as master of the ship Rover, and was a pioneer of Monterey, California when it was the capital of the territory.
He converted to Catholicism, became a Mexican citizen, and married the daughter of the Mexican territorial governor and acquired extensive land holdings in the area prior to the Mexican–American War.