Clayton Michael Greenfield[1] (born June 3, 1984) is an American professional stock car racing driver and team owner.

[4] Greenfield made his debut in NASCAR competition in 2010, driving for Team Gill Racing in the Camping World Truck Series at Martinsville Speedway.

[5] Greenfield also made his debut in the Nationwide Series in 2011, finishing 35th at Atlanta Motor Speedway, driving the No.

In 2020, Greenfield returned to the Truck Series to run a part-time schedule, which was then the full season excluding Las Vegas, Daytona RC, and Phoenix, and also made his first ARCA start since 2015, where he drove Andy Hillenburg's No.

* Season still in progress 1 Ineligible for series points (key) (Bold – Pole position awarded by qualifying time.