| Iaaf: | AUS |
| Fedname: | Athletics Australia |
| Year: | 2011 |
| Games: | World Championships in Athletics |
| Location: | Daegu |
| Competitors: | 41 |
| Gold: | 1 |
| Silver: | 2 |
| Bronze: | 0 |
| Rank: | 9 |
| Previous: | 2009 |
| Next: | 2013 |
Australia competed at the 2011 World Championships in Athletics from 27 August to 4 September in Daegu, South Korea.
An initial Australian Flame team of 24 has been announced by Athletics Australia, with reigning World champions Steve Hooker and Dani Samuels set to lead the green and gold charge at the competition. Athletes looking to qualify but not yet announced are eligible for selection until 31 July 2011 (excluding marathon and walks). A final team of 47 athletes was announced on 2 August 2011.
The following athletes appeared on the preliminary Entry List, but not on the Official Start List of the specific event,resulting in a total number of 41 competitors:
| KEY: | Did not participate | Competed in another event |
The following Australian competitors won medals at the Championships
| Medal | Athlete | Event | |
|---|---|---|---|
| 100 m hurdles | |||
| Long jump | |||
| 50 kilometres walk |
Two years after finishing only 5th although being the top favourite at the 12th IAAF World Championships in Berlin, Sally Pearson won the gold medal in the 100 m hurdles event with the world's fourth fastest time of 12.28s, a new Oceania Area record.
| Athlete | Event | Preliminaries | Heats | Semifinals | Final | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Time Width Height | Rank | Time Width Height | Rank | Time Width Height | Rank | Time Width Height | Rank | |||
| Kaila McKnight | 1500 metres | 4:08.74 | 9 q | 4:10.83 | 19 | Did not advance | ||||
| Eloise Wellings | 10,000 metres | DNS | ||||||||
| Sally Pearson | 100 m hurdles | 12.53 | 1 Q | 12.36 WL, AR | 1 Q | 12.28 CR, AR, WL | ||||
| Lauren Boden | 400 m hurdles | 55.78 SB | 12 Q | 55.29 | 20 | Did not advance | ||||
| Hayley Butler Melissa Breen Charlotte van Veenendaal Sally Pearson | 4 × 100 metres relay | 43.79 | 11 | Did not advance | ||||||
| Caitlin Sargent Caitlin Willis-Pincott Lauren Boden Anneliese Rubie | 4 × 400 metres relay | 3:32.27 SB | 16 | Did not advance | ||||||
| Regan Lamble | 20 kilometres walk | 1:33:38 | 15 | |||||||
| Claire Tallent | 20 kilometres walk | 1:34:46 | 21 | |||||||
| Alana Boyd | Pole vault | 4.50 | 13 | Did not advance | ||||||
| Dani Samuels | Discus throw | 60.05 | 11 q | 59.14 | 10 | |||||
| Kim Mickle | Javelin throw | 60.50 | 8 q | 61.96 | 6 | |||||