2008 in swimming
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| Decades | 
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2008 in swimming documents the highlights of competitive international swimming during 2008.
Major events
World
- 9–13 April: 2008 FINA World Swimming Championships (25 m) in Manchester, United Kingdom
- 3–8 May: 2008 FINA World Open Water Swimming Championships in Seville, Spain
- 8–13 July: 2008 FINA Youth World Swimming Championships in Monterrey, Mexico
- 9–17 August: Swimming at the 2008 Summer Olympics in Beijing, China
- 20–21 August: 10 km marathon swimming at the 2008 Summer Olympics in Beijing, China
- 7–15 September: Swimming at the 2008 Summer Paralympics in Beijing, China
- 25–26 October: Marathon swimming at the 2008 Asian Beach Games in Bali, Indonesia
- 2008 FINA Swimming World Cup
Regional
- 30 July – 3 August 2008 European Junior Swimming Championships in Belgrade, Serbia
- 1–7 December: 2008 African Swimming Championships in Johannesburg, South Africa
- 11–14 December: European Short Course Swimming Championships 2008 in Rijeka, Croatia
Other events
National championships
- Long course
| Dates | Event | City | 
|---|---|---|
| 22–29 March | .svg.png) Australian Championships | Sydney | 
| 31 March – 6 April |  British Championships | Sheffield | 
- Short course
| Dates | Event | City | 
|---|---|---|
| 27–30 November |  Swedish SC Championships | Stockholm | 
Other major meets

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