| Iaaf: | POR |
| Fedname: | Federação Portuguesa de Atletismo |
| Year: | 2013 |
| Games: | World Championships in Athletics |
| Location: | Moscow |
| Competitors: | 12 |
| Gold: | 0 |
| Silver: | 0 |
| Bronze: | 0 |
| Previous: | 2011 |
| Next: | 2015 |
Portugal competed at the 2013 World Championships in Athletics in Moscow, Russia, from 10–18 August 2013.A team of 12 athlete was announced to represent the country in the event.
(q – qualified, NM – no mark, SB – season best)
| Athlete | Event | Preliminaries | Heats | Semifinals | Final | ||||
|---|---|---|---|---|---|---|---|---|---|
| Time Width Height | Rank | Time Width Height | Rank | Time Width Height | Rank | Time Width Height | Rank | ||
| Hermano Ferreira | Marathon | DNF | – | ||||||
| Marcos Chuva | Long jump | 7.82 | align=center style="border-right:double" | 16 | align=center colspan= 4 | Did not advance | |||
| Edi Maia | Pole vault | 5.40 | align=center style="border-right:double" | 24 | align=center colspan= 2 | Did not advance | |||
| Marco Fortes | Shot put | 19.38 | align=center style="border-right:double" | 16 | align=center colspan=2 | did not advance | |||
| Sérgio Vieira | 20 kilometres walk | 1:28:34 | 40 | ||||||
| João Vieira | 20 kilometres walk | 1:22:05 | 4 | ||||||
| Pedro Isidro | 50 kilometres walk | 3:57:30 | 28 | ||||||
| Athlete | Event | Preliminaries | Heats | Semifinals | Final | ||||
|---|---|---|---|---|---|---|---|---|---|
| Time Width Height | Rank | Time Width Height | Rank | Time Width Height | Rank | Time Width Height | Rank | ||
| Ana Dulce Felix | 10,000 metres | 32:36.73 | 13 | ||||||
| Ana Cabecinha | 20 kilometres walk | 1:29:17 PB | 8 | ||||||
| Inês Henriques | 20 kilometres walk | 1:30:28 | 11 | ||||||
| Vera Santos | 20 kilometres walk | 1:31:36 | 17 | ||||||
| Irina Rodrigues | Discus throw | 57.64 | align=center style="border-right:double" | 17 | align=center colspan= 4 | Did not advance | |||