Chiloquin ( /tʃɪləkwɪn/ chil-ə-kwin) is a city in Klamath County, Oregon, United States. Chiloquin was the pioneer version of a Klamath family name Chaloquin, which was the name of a Klamath chief who was alive at the time of the treaty of 1864. The population was 716 at the 2000 census.
The Train Mountain Miniature Railroad in Chiloquin is, according to the Guinness Book of World Records, the longest miniature hobby railway system in the world. It includes a railway museum, 25 miles of total track, and trains that a person can straddle and ride.
According to the United States Census Bureau, the city has a total area of 0.8 square miles (2.1 km²), all of it land.