John Chad Allen (born February 6, 1975) is a retired outfielder in Major League Baseball. He attended and played for Texas A&M University from 1994 to 1996. He batted and threw right-handed.
From 1999 through 2005, Allen played for the Minnesota Twins (1999–2001), Cleveland Indians (2002), Florida Marlins (2003) and Texas Rangers (2004-2005).
In a seven-season career, Allen posted a .269 batting average with 14 home runs and 84 RBI in 267 games played.
Before the 2006 season, the Kansas City Royals signed Allen to a minor league contract with a spring training invite. At the start of the season, he was assigned to the Omaha Royals of the Pacific Coast League (PCL), the Royals' Triple-A affiliate. In 2007, Allen played for the Orix Buffaloes of Nippon Professional Baseball.
On December 13, 2007, he was named in the Mitchell Report, naming players who had used steroids.