The 7th FINA World Junior Swimming Championships, was held in Budapest, Hungary at the Danube Arena from 20 to 25 August 2019.

*   Host nation (Hungary)a Swimmers who participated in the heats only and received medals.

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

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

Swimmers from the following 126 countries competed at the Championships.