| Years in swimming | 
|---|
| Centuries | 
| Decades | 
| Years | 
2010 in swimming documents the highlights of competitive international swimming during 2010.
| Dates | Event | City | 
|---|---|---|
| 16–21 March |   | Sydney | 
| 18–21 March |   | Reykjavík | 
| 29 March–3 April |   | Sheffield | 
| 5–9 April |   | Auckland | 
| 13–18 April |   | Saint-Raphaël | 
| 22–25 April |   | Málaga | 
| 14–16 May |   | TBC | 
| 21–23 May |   | Athens | 
| 3–6 June |   | Gliwice | 
| 11–13 June |   | Eindhoven | 
| 11–13 June |   | TBC | 
| 19–20 June |   | Luxembourg | 
| 1–3 July |   | Alytus | 
| 14–18 July |   | Malmö | 
| 21–25 July |   | Netanya | 
| 29 July–1 August |   | Aveiro | 
| Dates | Event | City | 
|---|---|---|
| 14–18 July |   | Brisbane | 
| 12–14 November |   | Mount Maunganui | 
| 18–21 November |   | Reykjavík | 
| 2–5 December |   | Stockholm | 
| 16–18 December |   | Anykščiai | 
| 19–19 December |   | TBC |