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

Croatia qualified two boats based on its performance at the 2017 World Junior Rowing Championships.

[1] Croatia qualified one boat based on its performance at the 2018 IKA Twin Tip Racing Youth World Championship.

[2] Croatia also qualified one boat based on its performance at the Techno 293+ European Qualifier.

[3][4] Croatia qualified one table tennis player based on its performance at the Road to Buenos Aires (Asia) series.