The 6-6, 256-pound sophomore from Rock Hill, S.C., finished the season with 54 tackles, 23.5 tackles for loss, including a school record 13.0 sacks.
He also forced three fumbles and recovered one.
He tied for second in the country in tackles for loss and was tied for third in sacks.
Clowney was a unanimous first-team All-American, just the second in South Carolina history, joining 1980 Heisman Trophy winner George Rogers.
He finished sixth in the Heisman Trophy balloting and was the Ted Hendricks Award winner as the nation's top defensive end.
Previous winners of the AT&T All-America Player of the Year include Cedric Benson (2005), Vince Young (2006), Brady Quinn (2007), Michael Crabtree (2008), Graham Harrell (2009), Colt McCoy (2010) and Robert Griffin III (2011).
Clowney named All-America Player of the Year
Bengals Insider Top Stories
2016 Cincinnati Bengals Team OutlookSenior Fantasy Football Expert provides an in-depth analyses of each Fantasy relevant player from the 2016 Cincinnati Bengals!
Scout FantasyFriday at 9:05 AM
NFL’s most indispensable offensive playersExcluding quarterbacks, who are the most indispensable offensive players in the NFL?
Scout NFL Network06/13/2016
Fantasy Impact: Tyler Eifert's InjuryFantasy Football Expert Mark Morales-Smith breaks down the impact Tyler Eifert's injury has on the Fantasy Football community.
Cincinnati Bengals Extend Giovani BernardThe Cincinnati Bengals have locked up one of their young playmakers to a new three-year contract.