400 m Freestyle, Men

Competition	1999 South-East Asian Games (SEA Games)
Venue	Bandar Seri Begawan BRU
Held	—
Status	Medal
Competitors	3
Countries	3

Pos	Athlete(s)	Country	Mark
🥇	Dieung Mannang	MAS	4:00.34
🥈	Sng Ju Wei	SGP	4:04.55
🥉	Torwai Sethsothorn	THA	4:05.17