Dennis Allen Mitchell (born February 20, 1966) is an American former college and international track and field athlete, who was a member of the gold medal-winning team in the 4 x 100 meters relay race at the 1992 Summer Olympics.

In 1989, Mitchell won the NCAA championships in 200 meters race, and he was inducted into the University of Florida Athletic Hall of Fame as a "Gator Great" in 2005.

He has trained world class athletes including Sha'Carri Richardson, Kenny Bednarek, Justin Gatlin, Aaron Brown, Kaylin Whitney, Javianne Oliver, and Twanisha Terry, among others.

In 1998, Mitchell was banned by International Association of Athletics Federations for two years after a test showed high levels of testosterone.

"[4] Mitchell made his final international appearance at the 2001 World Championships, where his team finished first in the 4 x 100 meters relay, but was subsequently disqualified because of BALCO scandal involvement by a teammate.