Lebanon competed at the 2011 World Aquatics Championships in Shanghai, China between July 16 and 31, 2011.

Swimming

3 Lebanese swimmers qualified.

Men AthleteEventHeatsSemifinalsFinalTimeRankTimeRankTimeRankAbbas RaadMen's 50m Freestyle24.9564did not advanceMen's 100m Freestyle54.9173did not advanceWael KoubrousliMen's 100m Breaststroke1:09.1173did not advanceMen's 200m Breaststroke2:27.0850did not advance

Women AthleteEventHeatsSemifinalsFinalTimeRankTimeRankTimeRank Nibal YamoutWomen's 200m Breaststroke2:45.3534did not advanceWomen's 200m IM2:27.9335did not advance

References