Alberto A. Árias (born October 14, 1983 in Santo Domingo, Dominican Republic) is a relief pitcher for the Houston Astros of Major League Baseball.

In 2006, Árias played in Minor League Baseball with the Tulsa Drillers. Árias made his MLB debut with the Colorado Rockies in 2007 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.

2 Darin Erstad | 3 Kazuo Matsui | 4 Jason Michaels | 9 Hunter Pence | 10 Miguel Tejada | 11 Mike Hampton | 20 Bud Norris | 21 Michael Bourn | 27 Geoff Blum | 28 Jeff Keppinger | 36 Matt Kata | 38 Brian Moehler | 39 Jeff Fulchino | 41 Chris Coste | 43 Chris Sampson | 44 Roy Oswalt | 45 Carlos Lee | 47 José Valverde | 48 Tim Byrdak | 50 Alberto Árias | 51 Wandy Rodríguez | 53 Wesley Wright | 55 Humberto Quintero | 58 Yorman Bazardo | 77 Iván Rodríguez