The Oi Rio Pro 2019 was the fifth event of the Men's Championship Tour in the 2019 World Surf League.

It took place from 20 to 23 June in Saquarema, Rio de Janeiro, and was contested by 36 surfers.

[1] In the final, Brazil's Filipe Toledo defeated Jordy Smith of South Africa to win the eighth Championship Tour event of his career.

The top two surfers in each heat advance directly to the Round of 32, while the lowest-placed surfer in each heat enters the Elimination Round.

From the Round of 32 onwards, the competition follows a single elimination format, with the winner of each head-to-head heat advancing to the next round and the loser being eliminated.