Swimming at the 2025 SEA Games – Men's 100 metre backstroke

Men's 100 metre backstroke at the 2025 SEA Games
Venue	SAT Swimming Pool
Date	10 December
Competitors	11 from 6 nations
Winning time	55.08
Medalists
Jason Yusuf    Indonesia   Farrel Tangkas    Indonesia   Quah Zheng Wen    Singapore
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Main article: Swimming at the 2025 SEA Games

The men's 100 metre backstroke event at the 2025 SEA Games took place on 10 December 2025 at the SAT Swimming Pool in Bangkok, Thailand.

Schedule

All times are Indochina Standard Time (UTC+07:00)

Date	Time	Event
Wednesday, 10 December 2025	9:00	Heats
	18:00	Final

Records

Prior to this competition, the existing world, Asian, and Southeast Asian Games records were as follows.

World Record	Thomas Ceccon  (ITA)	51.60	Budapest, Hungary	20 June 2022
Asian Record	Xu Jiayu  (CHN)	51.86	Qingdao, China	12 April 2017
Games Record	Quah Zheng Wen  (SGP)	52.23	Capas, Philippines	12 December 2019

Results

Heats

^[1]

Rank	Heat	Lane	Swimmer	Nationality	Time	Notes
1	2	4	Quah Zheng Wen	Singapore	56.35	Q
2	2	5	Jason Yusuf	Indonesia	56.48	Q
3	2	6	Logan Noguchi	Philippines	57.27	Q
4	2	3	Tonnam Kanteemool	Thailand	57.37	Q
5	1	3	Joran Orongo	Philippines	57.38	Q
6	1	6	Daniel Scott Williams	Malaysia	57.62	Q
7	1	4	Farrel Tangkas	Indonesia	57.71	Q
8	2	2	Cao Văn Dũng	Vietnam	57.78	Q
9	1	5	Zackery Tay	Singapore	58.02	R
10	1	2	Trinh Trương Vĩnh	Vietnam	58.40	R
11	2	7	Khomchan Wichachai	Thailand	59.66

Final

^[2]

Rank	Lane	Swimmer	Nationality	Time	Notes
	5	Jason Yusuf	Indonesia	55.08
	1	Farrel Tangkas	Indonesia	55.89
	4	Quah Zheng Wen	Singapore	56.04
4	3	Logan Noguchi	Philippines	56.55
5	7	Daniel Scott Williams	Malaysia	57.11
6	6	Tonnam Kanteemool	Thailand	57.16
7	2	Joran Orongo	Philippines	57.33
8	8	Cao Văn Dũng	Vietnam	57.47

References

1. "Swimming - Men's 100m Backstroke Heats". 33rd SEA Games 2025. Retrieved 11 December 2025.
2. "Swimming - Men's 100m Backstroke Final". 33rd SEA Games 2025. Retrieved 11 December 2025.