Mae Hong Son Province

Mae Hong Son Province (, ; formerly called Mae Rong Son), also spelled Maehongson, Mae Hong Sorn or Maehongsorn, is one of the northern provinces (changwat) of Thailand, on the country's western border. Neighboring provinces are (clockwise from north) Shan State of Myanmar, Chiang Mai and Tak. To the west, the province borders Kayin State and Kayah State of Myanmar.