The men's 50 metre backstroke event at the 2025 SEA Games took place on 11 December 2025 at the SAT Swimming Pool in Bangkok, Thailand.
Schedule All times are Indochina Standard Time (UTC+07:00) DateTimeEventThursday, 11 December 2025 9:00 Heats 18:00 Final
Records
Results Heats
Rank Heat Lane Swimmer Nationality Time Notes 1 2 4 Quah Zheng Wen 25.35 Q 2 1 4 Jason Yusuf 25.88 Q 3 1 5 Tedd Windsor Chan 26.05 Q 4 1 3 Logan Noguchi 26.25 Q 5 2 6 Joran Orogo 26.32 Q 6 2 5 I Gede Siman Sudartawa 26.40 Q 7 2 3 Tonnam Kanteemool 26.46 Q 8 1 6 Geargchai Rutnosot 26.69 Q 9 1 2 Trịnh Trường Vinh 26.73 R 10 2 2 Daniel Scott Williams 26.91 R 11 1 7 Han Paing Htoo 31.68 12 2 7 Jirasak Khammavongkeo 31.96
Final
Rank Lane Swimmer Nationality Time Notes 5 Jason Yusuf 25.36 4 Quah Zheng Wen 25.43 2 I Gede Siman Sudartawa 25.49 4 3 Tedd Windsor Chan 25.56 5 6 Joran Orogo 26.22 6 1 Geargchai Rutnosot 26.31 7 7 Tonnam Kanteemool 26.34 8 8 Trịnh Trường Vinh 27.39
References