Thammanoon Sriroj (born 24 June 1969) is a Thai professional golfer who plays on the Asian Tour. He has five Asian Tour wins and was one of the first ten men to reach one million dollars in Asian Tour career earnings. He has five brothers who are professional golfers and is a cousin of Asian Tour golfer Chawalit Plaphol, with whom he represented Thailand in the 2000 WGC-World Cup.

Professional wins (18)

Asian Tour wins (5)

Asian Tour playoff record (1–2)

Japan Challenge Tour wins (1)

Asian Development Tour wins (1)

1Co-sanctioned by the Taiwan PGA Tour

All Thailand Golf Tour wins (9)

1Co-sanctioned by the ASEAN PGA Tour

Other wins (1)

Japan PGA Senior Tour wins (1)

Results in major championships

CUT = missed the halfway cut Note: Sriroj only played in The Open Championship.

Team appearances