Dominican Republic participated at the 2018 Summer Youth Olympics in Buenos Aires, Argentina from 6 October to 18 October 2018.

Dominican Republic qualified one archer based on its performance at the American Continental Qualification Tournament.

[1] Dominican Republic qualified one player based on the Badminton Junior World Rankings.

[2] Dominican Republic qualified one boat based on its performance at the North American and Caribbean IKA Twin Tip Qualifiers.

[3] They later qualified a boat in the boys' event based on its performance at the 2018 IKA Twin Tip Racing Youth World Championship.