Also, Astros senior vice president Jamie Hildreth won the Fred Hartman Long and Meritorious Service Award.
The team MVP award is the second for Altuve (2012), who set a club record for hits (225) en route to winning the American League batting crown.
Keuchel has been one of the top starters in the Majors this season, posting a 12-9 record in 29 starts with a 2.93 ERA and an AL-best five complete games. In addition to wins, Keuchel also leads the Astros in innings with a career-high 200.
McHugh, has been one of the top rookies in the AL with an 11-9 record in 25 starts with a 2.73 ERA, 157 strikeouts and 117 hits allowed in 154 2/3 innings of work. McHugh, who began the 2014 season at Triple-A Oklahoma City, leads the Astros' staff in strikeouts, while ranking among the AL leaders in strikeouts per nine innings and opponents' batting average (.208).
Feldman, who was the Astros' Opening Day starter in 2014, is the senior member of the rotation and provided guidance and leadership to Houston's young staff. On the field, Feldman finished the season strong, posting a 3.32 ERA in six starts in August and a 1.91 ERA in four September starts.
Rendon had the best season of his young career as he helped lead the Nationals to the National League East title. Rendon finished the year with a .287 ERA in 153 games with 39 doubles, six triples, 21 homers and 83 RBIs. His 111 runs scored are third in the Majors.
Hildreth has been with the Astros for 28 seasons, currently serving as senior vice president, broadcasting and alumni relations. This award is in memory of the late Baytown newspaper man who covered the Astros from their infancy in 1962 until his death in 1991.
Brian McTaggart is a reporter for MLB.com and writes an MLBlog, Tag's Lines. Follow @brianmctaggart on Twitter. This story was not subject to the approval of Major League Baseball or its clubs.