Australia at the 2013 World Aquatics Championships
Australia competed at the 2013 World Aquatics Championships in Barcelona, Spain from 19 July to 4 August 2013.
Medalists
* – Indicates the athlete competed in preliminaries but not the final relay.
Diving
;Men;Women
Open water swimming
Australia qualified seven swimmers.;Men
| Athlete | Event | Time | Rank |
| Simon Huitenga | 10 km | 1:49:29.7 | 12 |
| Rhys Mainstone | 5 km | 53:44.4 | 19 |
| Rhys Mainstone | 10 km | 1:49:30.4 | 13 |
| Rhys Mainstone | 25 km | 4:51:08.2 | 19 |
| Jarrod Poort | 5 km | 53:34.3 | 5 |
;Women
| Athlete | Event | Time | Rank |
| Danielle DeFrancesco | 5 km | 56:48.2 | 11 |
| Melissa Gorman | 10 km | 1:58:30.9 | 20 |
| Chelsea Gubecka | 10 km | 1:59:16.3 | 30 |
| Bonnie MacDonald | 5 km | 57:01.3 | 14 |
;Mixed
| Athlete | Event | Time | Rank |
| Simon Huitenga Jarrod Poort Melissa Gorman | Team | 54:16.1 | 4 |
Swimming
Australian swimmers achieved qualifying standards in the following events :;Men
Cameron McEvoy tied for the eighth and final spot in the final of the 200 m freestyle with Sebastiaan Verschuren from the Netherlands. However, Verschuren withdrew from the swimoff to focus on the 100 m freestyle event which allowed McEvoy to advance to the final.
;Women
Synchronised swimming
Reserves- Amie Thompson
- Jade Haynes-Love
Water polo
Men's tournament
;Team roster- Joel Dennerley
- Richard Campbell
- Matthew Martin
- John Cotterill
- Nathan Power
- Jarrod Gilchrist
- Aidan Roach
- Aaron Younger
- Joel Swift
- Tyler Martin
- Rhys Howden
- William Miller
- James Clark
| Pld | W | D | L | GF | GA | GD | Pts | |
| 3 | 3 | 0 | 0 | 39 | 26 | +13 | 6 | |
| 3 | 1 | 1 | 1 | 32 | 27 | +5 | 3 | |
| 3 | 1 | 1 | 1 | 25 | 26 | −1 | 3 | |
| 3 | 0 | 0 | 3 | 21 | 38 | −17 | 0 |
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;Round of 16
;Quarterfinal
;5th–8th place semifinal
;Seventh place game
Women's tournament
;Team roster- Lea Barta
- Jayde Appel
- Hannah Buckling
- Holly Lincoln-Smith
- Isobel Bishop
- Bronwen Knox
- Rowena Webster
- Glencora Ralph
- Zoe Arancini
- Ashleigh Southern
- Keesja Gofers
- Nicola Zagame
- Kelsey Wakefield
| Pld | W | D | L | GF | GA | GD | Pts | |
| 3 | 3 | 0 | 0 | 45 | 10 | +35 | 6 | |
| 3 | 2 | 0 | 1 | 35 | 21 | +14 | 4 | |
| 3 | 1 | 0 | 2 | 22 | 35 | −13 | 2 | |
| 3 | 0 | 0 | 3 | 10 | 46 | −36 | 0 |
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;Round of 16
;Quarterfinal
;Semifinal
;Final