Ariel Peña Mora (born May 20, 1989) is a Dominican professional baseball pitcher who is a free agent. He throws a four-seam fastball, a two-seam fastball, a slider and a changeup.
Peña signed as an international free agent with the Los Angeles Angels of Anaheim. The Angels traded Peña, Johnny Hellweg, and Jean Segura to the Milwaukee Brewers for Zack Greinke on July 27, 2012.
The Brewers promoted Peña to the major leagues from the Colorado Springs Sky Sox of the Class AAA Pacific Coast League on September 4, 2015.