Roberto Osuna Quintero (born February 7, 1995) is a Mexican professional baseball pitcher for the Houston Astros of Major League Baseball (MLB).
He previously played for the Toronto Blue Jays.
Osuna was signed by the Blue Jays out of Mexico as a 16-year-old, and played three seasons in their minor league organization.
On April 8, 2015, at 20 years of age he became the youngest pitcher to appear in a game for the organization, and the first player born in 1995 to play in Major League Baseball.
In 2017 he was an American League All Star.
In 2018 he was suspended for 75 games for violating the league's policy on domestic assault.