Khiri Mat (Thai: คีรีมาศ, pronounced [kʰīː.rīː mâːt]) is the southernmost district (amphoe) of Sukhothai province, in the lower northern region of Thailand. The district seat is Tanot.
Geography: Khiri Mat covers an area of 521.9 km² (201.5 sq mi). Neighboring districts are (from the northwest clockwise) Ban Dan Lan Hoi, Mueang Sukhothai and Kong Krailat of Sukhothai Province, Bang Rakam of Phitsanulok province, and Phran Kratai of Kamphaeng Phet province.
History: The district was originally named Tanot and was renamed to Khiri Mat in 1939.
Administration: The district is divided into 10 sub-districts (tambons), which are further subdivided into 101 villages (mubans). The sub-districts are: Tanot, Thung Luang, Ban Pom, Sam Phuang, Si Khiri Mat, Nong Chik, Na Choeng Khiri, Nong Krading, Ban Nam Phu, and Thung Yang Mueang. There are two townships (thesaban tambons): Tanot (covering parts of tambon Tanot) and Thung Luang (covering tambon Thung Luang).
Demographics: As of 2005, the district had a population of 56,585, with a population density of 108.4 inhabitants per km².
Postal code: 64160. Geocode: 6403.
