Thommayanti (Thai: ทมยันตี) was the pen name of Thailand National Artist Khun Ying Wimon Chiamcharoen (Thai: วิมล เจียมเจริญ; 10 July 1936 – 13 September 2021), née Wimon Siriphaibun (Thai: วิมล ศิริไพบูลย์, also Wimol Siripaiboon). She was a Thai novelist and was a legislator several times in her career.