| Iaaf: | LES |
| Year: | 2013 |
| Games: | World Championships in Athletics |
| Location: | Moscow |
| Competitors: | 3 |
| Gold: | 0 |
| Silver: | 0 |
| Bronze: | 0 |
| Previous: | 2011 |
| Next: | 2015 |
Lesotho competed at the 2013 World Championships in Athletics in Moscow, Russia, from 10–18 August 2013. A team of 3 athletes was announced to represent the country in the event.
(q – qualified, NM – no mark, SB – season best)
| Athlete | Event | Preliminaries | Heats | Semifinals | Final | ||||
|---|---|---|---|---|---|---|---|---|---|
| Time | Rank | Time | Rank | Time | Rank | Time | Rank | ||
| Mosito Lehata | 200 metres | 20.46 | 8 Q | 20.68 | 23 | align=center colspan=2 | did not advance | ||
| Jobo Khatoane | Marathon | DNF | – | ||||||
| Tsepo Ramonene | Marathon | DNF | – | ||||||