The 2023 O'Reilly Auto Parts 150 at Mid-Ohio was the 14th stock car race of the 2023 NASCAR Craftsman Truck Series, and the 2nd iteration of the event. The race was held on Saturday, July 8, 2023, in Lexington, Ohio at Mid-Ohio Sports Car Course, a 2.400 miles (3.862 km) permanent road course. The race took the scheduled 67 laps to complete. Corey Heim, driving for Tricon Garage, would start on the pole and dominate the majority of the race, leading a race-high 30 laps, and earning his fourth career NASCAR Craftsman Truck Series win, and his second of the season. To fill out the podium, Zane Smith, driving for Front Row Motorsports, and Christian Eckes, driving for McAnally-Hilgemann Racing, would finish 2nd and 3rd, respectively.

Mid-Ohio Sports Car Course is a road course auto racing facility located in Troy Township, Morrow County, Ohio, United States, just outside the village of Lexington. Mid-Ohio has also colloquially become a term for the entire north-central region of the state, from south of Sandusky to the north of Columbus. It hosts a number of racing series such as IndyCar, IMSA WeatherTech Sportscar Championship, and the NASCAR Craftsman Truck Series, along with other club events such has SCCA and National Auto Sport Association.

The first and only practice session was held on Friday, July 7, at 4:00 pm EST, and would last for 20 minutes.^[1] Ben Rhodes, driving for ThorSport Racing, would set the fastest time in the session, with a lap of 1:27.767, and an average speed of 92.618 mph (149.054 km/h).^[2]

Qualifying was held on Friday, July 7, at 4:30 pm EST.^[1] Since Mid-Ohio Sports Car Course is a road course, the qualifying system is a two group system, with two rounds. Drivers will be separated into two groups, Group A and Group B. Each driver will have multiple laps to set a time. The fastest 5 drivers from each group will advance to the final round. The fastest driver to set a time in that round will win the pole.^[3] Corey Heim, driving for Tricon Garage, would score the pole for the race, with a lap of 1:26.137, and an average speed of 94.371 mph (151.875 km/h).^[4]

Stage 1 Laps: 15

Stage 2 Laps: 20

Stage 3 Laps: 32