Bregman beat out four other finalists: fellow Astros Minor Leaguer Joe Musgrave, Seattle's Tyler O'Neill, Colorado's David Dahl and Boston's Yoan Moncada.
Bregman, 22, joined the Astros in July after rocketing through Houston's system in his first season of professional baseball. The versatile infielder was the No. 2 overall pick in the 2015 Draft.
Bregman hit .306/.406/.580 with 22 doubles, two triples, 20 home runs and 61 RBIs in 80 games with Double-A Corpus Christi and Triple-A Fresno. He also drew 47 walks while striking out just 38 times.
Cash Kruth is a reporter for MLB.com. Follow him on Twitter at @cashkruth. This story was not subject to the approval of Major League Baseball or its clubs.