| Swimming at the 2018 South American Games | |
|---|---|
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| Venue | G.A.M.C. Aquatics Center |
| Dates | 27 May – 1 June |
| Nations | 12 |
The swimming competitions at the 2018 South American Games in Cochabamba took place from 27 to 30 May at the G.A.M.C. Aquatics Center at Mariscal Santa Cruz Park. Open water swimming events were held on 1 June at La Angostura Lake.