| Iaaf: | BRA |
| Fedname: | Confederação Brasileira de Atletismo |
| Year: | 2013 |
| Games: | World Championships in Athletics |
| Location: | Moscow |
| Competitors: | 32 |
| Gold: | 0 |
| Silver: | 0 |
| Bronze: | 0 |
| Appearances: | auto |
| Previous: | 2011 |
| Next: | 2015 |
Brazil competed at the 2013 World Championships in Athletics in Moscow, Russia, from 10–18 August 2013.A team of 32 athletes were 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 | ||
| Aldemir da Silva Junior | 200 metres | 20.73 | 26 | align=center colspan=4 | did not advance | ||||
| Bruno de Barros | 200 metres | 20.60 | =19 | align=center colspan=4 | did not advance | ||||
| Anderson Henriques | 400 metres | 45.13 | 4 Q | 44.95 | 8 q | 45.03 | 8 | ||
| Kleberson Davide | 800 metres | 1:48.28 | 35 | align=center colspan=4 | did not advance | ||||
| Mahau Suguimati | 400 metres hurdles | 50.00 | 22 q | 50.27 | 20 | align=center colspan=2 | did not advance | ||
| Pedro Luiz de Oliveira Wagner Cardoso Anderson Henriques Hugo de Sousa | 4 × 400 metres relay | 3:01.09 | 6 q | 3:02.19 | 7 | ||||
| Solonei da Silva | Marathon | 2:11:40 | 6 | ||||||
| Paulo Roberto Paula | Marathon | 2:11:40 | 7 | ||||||
| Caio Bonfim | 20 kilometres walk | align=center colspan=2 | |||||||
| Mário dos Santos | 50 kilometres walk | 4:06:12 | 43 | ||||||
| Athlete | Event | Preliminaries | Final | |||
|---|---|---|---|---|---|---|
| Width Height | Rank | Width Height | Rank | |||
| Mauro Vinicius da Silva | Long jump | 7.92 | 11 q | 8.24 | 5 | |
| Jefferson Sabino | Triple jump | 16.49 | 16 | align=center colspan=2 | did not advance | |
| Thiago Braz da Silva | Pole vault | 5.40 | =14 | align=center colspan=2 | did not advance | |
| Augusto de Oliveira | Pole vault | 5.55 | 6 q | 5.65 | 11 | |
| João Gabriel Sousa | Pole vault | 5.25 | =29 | align=center colspan=2 | did not advance | |
| Ronald Juliao | Discus throw | 59.36 | 22 | align=center colspan=2 | did not advance | |
| Carlos Chinin | ||||||
|---|---|---|---|---|---|---|
| Event | Results | Points | Rank | |||
| 100 m | 10.78 | 910 | 7 | |||
| Long jump | 7.54 | 945 | 6 | |||
| Shot put | 14.49 | 758 | 10 | |||
| High jump | 1.96 | 767 | =19 | |||
| 400 m | 48.80 | 871 | =14 | |||
| 110 m hurdles | 14.05 | 968 | 4 | |||
| Discus throw | 45.84 | 784 | 7 | |||
| Pole vault | 5.10 | 941 | 8 | |||
| Javelin throw | 59.98 | 738 | 16 | |||
| 1500 m | 4:36.01 | 706 | 16 | |||
| Total | 8388 | 6 | ||||
| Athlete | Event | Preliminaries | Heats | Semifinals | Final | ||||
|---|---|---|---|---|---|---|---|---|---|
| Time | Rank | Time | Rank | Time | Rank | Time | Rank | ||
| Franciela Krasucki | 100 metres | 11.17 | 9 Q | 11.34 | 15 | align=center colspan=2 | did not advance | ||
| Ana Cláudia Silva | 100 metres | 11.08 | 4 Q | 11.25 | 11 | align=center colspan=2 | did not advance | ||
| Franciela Krasucki | 200 metres | 23.20 | 24 | align=center colspan=4 | did not advance | ||||
| Ana Cláudia Silva | 200 metres | 23.31 | 30 | align=center colspan=4 | did not advance | ||||
| Joelma Sousa | 400 metres | 53.01 | 29 | align=center colspan=4 | did not advance | ||||
| Evelyn dos Santos Ana Cláudia Silva Franciela Krasucki Vanda Gomes Rosângela Santos | 4 × 100 metres relay | 42.29 | 4 Q | align=center colspan=2 | |||||
| Athlete | Event | Preliminaries | Final | |||
|---|---|---|---|---|---|---|
| Width Height | Rank | Width Height | Rank | |||
| Keila Costa | Triple jump | 13.82 | 13 | align=center colspan=2 | did not advance | |
| Karla Rosa da Silva | Pole vault | 4.30 | 19 | align=center colspan=2 | did not advance | |
| Fabiana Murer | Pole vault | 4.55 | =9 q | 4.65 | =5 | |
| Geisa Arcanjo | Shot put | 17.55 | 18 | align=center colspan=2 | did not advance | |
| Fernanda Martins | Discus throw | align=center colspan=2 | align=center colspan=2 | did not advance | ||
| Jucilene de Lima | Javelin throw | 55.18 | 26 | align=center colspan=2 | did not advance | |