 The word "klang" in Thai means 'middle', which refers to the location of the district between the Nok District (now Bua Yai District) and Nai District (Mueang Nakhon Ratchasima District).When Thai people had to choose a family name at the beginning of the 20th century, many of the locals created names with the word "klang".The district's name was changed from Non Wat to Non Sung in 1939.