Rattanon Wannasrichan (; born 11 July 1995) is a Thai professional golfer who plays on the Asian Tour. Wannasrichan turned professional in 2012. He clinched his first Asian Tour title at the Thailand Open in May 2017.

Professional wins (8) Asian Tour wins (3) No.DateTournamentWinning scoreMargin ofvictoryRunner(s)-up1 21 May 2017Thailand Open−21 (62-69-65-67=263)2 strokes Gaganjeet Bhullar, Shiv Kapur213 Oct 2024SJM Macao Open−20 (61-66-67-66=260)2 strokes Gunn Charoenkul328 Sep 2025Mercuries Taiwan Masters1−5 (72-68-70-73=283)1 stroke Suradit Yongcharoenchai 1Co-sanctioned by the Taiwan PGA Tour

Asian Tour playoff record (0–1) No.YearTournamentOpponentResult12022Singapore International Tom KimLost to birdie on first extra hole

Asian Development Tour wins (1) No.DateTournamentWinning scoreMargin ofvictoryRunners-up12 Aug 2015Taifong Open1−12 (71-70-70-65=276)1 stroke Casey O'Toole, Jordan Sherratt 1Co-sanctioned by the Taiwan PGA Tour

All Thailand Golf Tour wins (3) No.DateTournamentWinning scoreMargin ofvictoryRunner(s)-up124 May 2015Singha All Thailand Championship−18 (66-65-66-73=270)2 strokes Tirawat Kaewsiribandit21 Nov 2015All Thailand Premier Championship−12 (68-69-70-69=276)Playoff Phachara Khongwatmai, Prom Meesawat318 Feb 2018Singha E-San Open−15 (70-70-64-69=273)Playoff Pavit Tangkamolprasert

Thailand PGA Tour wins (1) No.DateTournamentWinning scoreMargin ofvictoryRunner-up119 Dec 2020Singha-SAT Khon Kaen Championship−11 (67-69-69=205)Playoff Prayad Marksaeng

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