The swimming competition at the 2018 Central American and Caribbean Games was held at the Aquatic Complex in Barranquilla, Colombia from 20 to 25 July.

Open water swimming events were held on 28 and 29 July at Puerto Velero.

a Swimmers who participated in the heats only and received medals.

b Swimmers who participated in the heats only and received medals.

*   Host nation (Colombia)