Khao Chakan District  Khao Chakan (, ) is a district ("amphoe") in the western part of Sa Kaeo Province, eastern Thailand. Neighboring districts are (from the north clockwise) Mueang Sa Kaeo, Watthana Nakhon, Khlong Hat, and Wang Nam Yen of Sa Kaeo Province, and Tha Takiap of Chachoengsao Province. The district is named after the hills of Khao Chakan, a group of limestone hills rising out of the valley alluvium. In the hills are several caves, including the cave temple Wat Tham Khao Chakan. The minor district ("king amphoe") Khao Chakan was established 30 April 1994 with four "tambons" split off from Mueang Sa Kaeo District. On 11 October 1997 it was upgraded to a full district. The district is divided into four sub-districts ("tambons"), which are further subdivided into 62 villages ("mubans"). There are no municipal ("thesaban") areas. Each of the sub-districts is administered by a tambon administrative organization (TAO).