Alberto A. Arias (born October 14, 1983) is a Dominican former professional baseball pitcher.
In , Arias played in Minor League Baseball with the Tulsa Drillers. Arias made his MLB debut with the Colorado Rockies in and made 6 relief appearances, going 1–0 with a 4.91 ERA. On July 31, 2008, the Houston Astros claimed him off waivers from the Rockies and assigned him to Triple-A Round Rock.
In 2009, Arias took a big step forward in his career, setting career-best marks in games played (42), innings pitched (45.2), WHIP (1.489) and ERA (3.35).
Arias missed the 2010 and 2011 seasons due to injury. On October 24, 2011, he re-signed a minor league contract with the Astros.