The 2019 World Rugby Under 20 Championship was the twelfth edition of the premier age-grade competition for rugby.

The tournament was held in Argentina for the second time, having been hosted there in 2010.

[1] Defending champions France won the under 20 title again in 2019, defeating Australia in a closely fought final by 24–23 at the Racecourse Stadium in Rosario.

[2] The city of Santa Fe also hosted matches in the 2019 championship.

[1] The teams that participated in the tournament are listed in the table below, with a summary of their previous best results at the World Rugby Under 20 Championship included.