The Thailand Amateur Open (), currently played as the Singha Thailand Amateur Open for sponsorship reasons, is an annual amateur golf championship held in Thailand. Organised by the Thailand Golf Association, the tournament includes separate men's and women's competitions.
The men's champion receives the King Rama VII Trophy, while the women's champion receives the TGA President's Trophy. The championship traces its origins to 1930, although its edition numbering does not correspond exactly to an uninterrupted annual sequence.
History The Thailand Amateur Open was established in 1930 and is one of Thailand's long-running national amateur golf championships. The men's competition is associated with the King Rama VII Trophy, donated by King Prajadhipok, while the women's competition is associated with the TGA President's Trophy.
Past champions and leading finishers have included golfers who later competed professionally, including Thongchai Jaidee, Prayad Marksaeng, Thaworn Wiratchant, Boonchu Ruangkit, Atthaya Thitikul, Aditi Ashok, Natthakritta Vongtaveelap and Chanettee Wannasaen.
Recent editions have generally been staged at Panya Indra Golf Club in Bangkok.
Format The modern championship is played as a 72-hole stroke play event over four rounds. The men's and women's competitions are held separately, with the lowest aggregate gross score determining the champion in each division. Under the 2025 conditions of competition, ties for first place are decided by a sudden-death, hole-by-hole playoff.
Winners The following tables list champions identified in the available published sources.
Men +Men's champions Year Edition Champion Score Margin Runner(s)-up Ref. 2025 91st Nguyễn Tuấn Anh 258 (−22) 5 strokes Thanawin Lee, Teerawut Boonseeor 2024 90th Parin Sarasmut 262 (−18) 5 strokes Jeffrey Shen 2023 89th Thanawin Lee 270 (−10) Playoff Warut Boonrod 2022 88th Ashita Piamkulvanich 276 (−4) 4 strokes Supapon Amornchaichan, Arsit Areephun 2021 87th Pongsapak Laopakdee 273 (−11) 3 strokes Natthaphong Ratchatorn 2020 86th Pongsapak Laopakdee 269 (−11) 3 strokes Natthaphong Ratchatorn 2019 85th Wit Pitipat 271 (−9) 2 strokes Jesse Waaralinna, Billy Cawthorne, Weerawish Narkprachar 2018 84th Nopparat Panichpon 271 (−9) 5 strokes Yuto Watanabe 2017 83rd Witchayanon Chothirunrungrueng 268 (−16) 1 stroke Jesse Yap 2016 82nd Witchayanon Chothirunrungrueng 273 (−15) 2 strokes Sadom Kaewkanjana 2015 81st Blake Proverbs 278 (−10) 1 stroke Son Jun-ho 2014 80th Sarit Suwannarut 276 (E) 3 strokes Ye Htet Aung 2013 79th Suradit Yongcharoenchai 281 Playoff Poom Saksansin, Jerome Ng 2012 78th Itthipat Buranatanyarat 272 9 strokes Nadaraja Thangaraja 2011 77th Natipong Srithong 277 (−11) 1 stroke Maung Maung Oo
Women +Women's champions Year Edition Champion Score Margin Runner(s)-up Ref. 2025 91st Anna Iwanaga 262 (−18) 4 strokes Namo Luangnitikul, Achiraya Sriwong 2024 90th Achiraya Sriwong 268 (−12) 1 stroke Thitikarn Thapasit 2023 89th Thitikarn Thapasit 269 (−11) 1 stroke Alisa Inprasit, Achiraya Sriwong 2022 88th Natthakritta Vongtaveelap 270 (−10) Playoff Rianne Malixi 2021 87th Natthakritta Vongtaveelap 270 (−14) 6 strokes Suvichaya Vinijchaitham 2020 86th Thitapa Pakdeesettakul 274 (−6) Playoff Chanettee Wannasaen, Natthakritta Vongtaveelap 2019 85th Kang Hyeon-ji 276 (−4) Playoff Shoka Furuya 2018 84th Taparat Boonyasaknanon 280 (E) 1 stroke Phannarai Meesom-us 2017 83rd Kultida Pramphun 280 (−4) 1 stroke Taglao Jeeravivitaporn 2016 82nd Kanyalak Preedasuttijit 283 (−5) 5 strokes Atthaya Thitikul 2015 81st Aditi Ashok 286 (−2) 5 strokes Gennai Goodwin, Chakansim Khamborn 2014 80th Kanyalak Preedasuttijit 280 2 strokes Parinda Phokan 2013 79th Budsabakorn Sukapan 285 Playoff Princess Mary Superal 2012 78th Benyapa Niphatsophon 282 3 strokes Princess Mary Superal 2011 77th Dottie Ardina 284 (−4) 10 strokes Asama McKenzie, Chihiro Ikeda
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