Wichian Khamcharoen (Thai: วิเชียร คำเจริญ) (12 April 1935 — 10 December 2016) or Lop Burirat (Thai: ลพ บุรีรัตน์) was a Thai Luk thung songwriter. He was a regular songwriter for Thai Luk thung singer Pumpuang Duangjan. His songs include "Nad Phop Na Amphoe", "Krasae Khao Ma Si", "Uhue Lor Jang", "Nguen Na Mee Mai", "Amija Tinger", "Noo Mairoo", "Khoe Hai Ruay", etc. He was awarded National Artist of Thailand in 2005.