Lesotho competed at the 2017 World Championships in Athletics in London, United Kingdom, from 4–13 August 2017.
Results (q – qualified, NM – no mark, SB – season best)
Men Track and road events AthleteEventHeatSemifinalFinalResultRankResultRankResultRankMosito Lehata100 metres–colspan=4 Tsepo MathibelleMarathoncolspan=4 rowspan=2 –Lebenya Nkoka–
References