| Iaaf: | BUL |
| Year: | 2013 |
| Games: | World Championships in Athletics |
| Location: | Moscow |
| Competitors: | 10 |
| Gold: | 0 |
| Silver: | 0 |
| Bronze: | 0 |
| Previous: | 2011 |
| Next: | 2015 |
Bulgaria competed at the 2013 World Championships in Athletics in Moscow, Russia, from 10–18 August 2013. A team of ten 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 | ||
| Denis Dimitrov | 100 metres | 10.29 | 30 | align=center colspan=4 | Did not advance | ||||
| Mitko Tsenov | 3000 metres steeplechase | 8.32.49 | 24 | did not advance | |||||
| Athlete | Event | Preliminaries | Final | |||
|---|---|---|---|---|---|---|
| Width Height | Rank | Width Height | Rank | |||
| Zlatozar Atanasov | Triple jump | 16.21 | 19 | align=center colspan=2 | did not advance | |
| Viktor Ninov | High jump | align=center colspan=4 | Withdrew | |||
| Georgi Ivanov | Shot put | 20.40 | 6 q | 20.39 | 8 | |
| Athlete | Event | Preliminaries | Heats | Semifinals | Final | ||||
|---|---|---|---|---|---|---|---|---|---|
| Time | Rank | Time | Rank | Time | Rank | Time | Rank | ||
| Ivet Lalova | 100 metres | 11.18 | 10 Q | 11.10 | 9 | align=center colspan=2 | did not advance | ||
| Ivet Lalova | 200 metres | 22.92 | 16 q | 22.81 | =9 | align=center colspan=2 | did not advance | ||
| Vania Stambolova | 400 metres hurdles | 55.91 | 14 Q | 56.58 | 15 | align=center colspan=2 | did not advance | ||
| Silvia Danekova | 3000 metres steeplechase | 9:35.66 | 5 Q NR | 9:58.57 | 14 | ||||
| Athlete | Event | Preliminaries | Final | |||
|---|---|---|---|---|---|---|
| Width Height | Rank | Width Height | Rank | |||
| Mirela Demireva | High jump | 1.83 | 26 | align=center colspan=2 | did not advance | |
| Radoslava Mavrodieva | Shot put | 17.34 | 19 | align=center colspan=2 | did not advance | |