Michael "Mike" Joseph Harmon (born January 24, 1958) is an American professional driver. He currently competes part-time in the NASCAR Xfinity Series, driving the No. 74 Dodge Challenger for Mike Harmon Racing and part-time in the Camping World Truck Series, driving the No. 74 Chevrolet Silverado for MHR. In the past, he drove in the NASCAR Slim Jim All Pro Series, finishing 8th in points in 1997. He has also racked up 300 feature wins in short-track competition during his racing career.

Harmon made his NASCAR debut in 1996 driving the No. 24 Chevrolet at South Boston Speedway, where he finished 31st after a transmission failure. He ran seven more races in the car that season, with a best finish of 23rd, but a sponsorship struggle caused his team to close down. He was scheduled to return to NASCAR in 1999, when he signed with Donlavey Racing to compete for NASCAR Winston Cup Rookie of the Year honors. Harmon was reportedly fired from the team during preparation for that year's Daytona 500 when he refused to let another driver try to get more speed out of the car.

In 2001, Harmon returned to the Busch Series, driving fourteen races for Mixon Motorsports in the No. 44 Pontiac Grand Prix. His best finish was a 28th at Indianapolis Raceway Park, the only race he finished that year. He made an additional start for Moy Racing at Talladega Superspeedway, finishing 35th, and competed in two Craftsman Truck races for MB Motorsports and Troxell Racing, respectively. He made 25 starts for Mixon in 2002, with a best finish of 22nd at Daytona. The following season, he competed in a career-high total of 32 races, and finished seventeen of them. With a new team partner in Global Industrial Contractors, Harmon had his first career top-twenty finish at IRP and finished 23rd in points.

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