Tha Khantho (, ; , ) is the northwesternmost district (amphoe) of Kalasin province, northeastern Thailand.
Geography Neighboring districts are (from the south clockwise): Nong Kung Si of Kalasin Province; Kranuan of Khon Kaen province; Kumphawapi, Si That, and Wang Sam Mo of Udon Thani province.
History The minor district (king amphoe) Tha Khantho was established on 1 October 1962, when the two tambons Tha Khantho and Khok Khruea were split off from Sahatsakhan district. It was upgraded to a full district on 2 October 1965. Khok Khruea was later reassigned to Nong Kung Si District.
Administration The district is divided into six sub-districts (tambons), which are further subdivided into 59 villages (mubans). Tha Khantho is a township (thesaban tambon) which covers tambon Tha Khantho and parts of Na Tan. There are a further six tambon administrative organizations (TAO).
No. Name Thai name Villages Pop.1.Tha Khanthoท่าคันโท95,7702.Kung Kaoกุงเก่า116,6083.Yang Umยางอู้ม64,4124.Kut Chikกุดจิก115,4575.Na Tanนาตาล1310,4336.Dong Sombunดงสมบูรณ์94,613