Canby is a census-designated place in Modoc County, California. It is located 17 miles (27 km) west of Alturas, at an elevation of 4314 feet (1315 m). It had a population of 315 at the 2010 census. The ZIP Code is 96015. The community is inside area code 530.
Canby is the location of the main branch of the I'SOT religious community, and is known for the I'SOT's nativity scenes prominently displayed along the town's main street, California State Route 299.
The first post office opened at Canby in 1874. The name honors Gen. Edward Canby, who was shot by a companion of Captain Jack at a peacemaking session, after the American government made a pretense of purchasing the territory of the Modoc people from the Klamath people, and forced the Modoc people to move to the Klamath Reservation in Oregon. Some Modoc people left the reservation, because the Klamath people made it clear that the Modoc were not welcome there. This shooting lead to the siege at Captain Jack's Stronghold.