Oliver Ortega was born on October 2, 1996, he is a Dominican professional baseball pitcher for the Los Angeles Angels of Major League Baseball (MLB).
Ortega signed with the Los Angeles Angels as an international free agent on February 10, 2015. He spent the 2015 season with the DSL Angels, going 1–3 with a 4.33 ERA over 43+2⁄3 innings.
He spent the 2016 season with the AZL Angels, going 2–3 with a 2.83 ERA over 28+2⁄3 innings. Ortega did not appear in a game in 2017. He spent the 2018 season with the Burlington Bees, going 4–5 with a 3.51 ERA over 82 innings.
Ortega split the 2019 season between the Inland Empire 66ers and the Mobile BayBears, going a combined 4–5 with a 3.34 ERA and 121 strikeouts over 94+1⁄3 innings. Ortega was a 2019 California League All-Star.
Ortega received his first promotion to the major leagues when the Angels selected his contract from Triple-A Salt Lake on September 1, 2021. He made his major league debut on September 8, 2021, tossing 1 1/3 scoreless innings of relief against the San Diego Padres.