Iran competed at the 2019 World Aquatics Championships in Gwangju, South Korea from 12 to 28 July.
Swimming
Iran entered two swimmers.
Men AthleteEventHeatSemifinalFinalTimeRankTimeRankTimeRankBenyamin Gharehassanloo50 m freestyle23.3961did not advance100 m freestyle51.4966did not advanceAlireza Yavari200 m freestyle1:56.2858did not advance100 m butterfly55.6351did not advance
References