Theerathon Bunmathan (Thai: ธีราทร บุญมาทัน), simply known as Aum (Thai: อุ้ม) is a Thai professional football player who plays as a Left back for Thai Leagues 1 club Muangthong United and the Thailand national team.
On 24 May 2016 Theerathon married Chatrakamol Muangman in a tradtitional ceremony. The wedding was attended by many teammates and staff from the teams Theerathon had played for.
Theerathon started almost every match for Buriram due to his superb and consistent form. Theerathon is a major part of Buriram United’s success, his free kicks assisted and scored many goals for the club. His free kick against FC Seoul in the 2013 AFC Champions League qualified Buriram to the knockout phase. In the 2013 Thai Premier League Theerathon scored 3 goals against BEC Tero Sasana, Chonburi, and Ratchaburi. In May 2016 it was announced that after spending six years with Buriram United he would be joining to arch rivals Muangthong United the following month on a five-year contract for an all-time record for highest football transfer fee for Thai Leagues T1 at 35 million bath but in 2 November 2016, Tanaboon Kesarat broke the record of him which transfer fee is undisclosed but estimated to be around 50 million Baht.