Brunei competed at the 2013 World Championships in Athletics from August 10 to August 18 in Moscow, Russia. A team of one athlete was announced to represent the country in the event.Brunei Athletes
Results
(q – qualified, NM – no mark, SB – season best)
Men
AthleteEventHeatsSemifinalsFinalTimeRankTimeRankTimeRankAk Hafiy Tajuddin Rositi400 metres49.9831did not advance
References