Justin Diercks (born April 4, 1980) is an American racecar driver from Davenport, Iowa. He previously drove the #70 car for ML Motorsports. He made his Busch (now Nationwide) Series debut in 2006 in the Circuit City 250 at Richmond International Raceway. He made a total of 7 Busch Series starts in 2006 with a best finish of 28th. He attempted four more races but failed to qualify for them. Diercks returned to the team in 2007, running an additional seven races. On June 29th, 2007, Diercks and ML Motorsports mutually agreed to part ways. They had a best finish of 22nd at the beginning of the 2007 season.