The 2023 NOCO 400 was a NASCAR Cup Series race held on April 16, 2023, at Martinsville Speedway in Ridgeway, Virginia.

Contested over 400 laps on the 0.526 mile (0.847 km) paperclip-shaped short track; it was the ninth race of the 2023 NASCAR Cup Series season.

At 0.526 miles (0.847 km) in length, it is the shortest track in the NASCAR Cup Series.

Tyler Reddick was the fastest in the practice session with a time of 20.217 seconds and a speed of 93.664 mph (150.738 km/h).

Steve Post, Kim Coon, and Dillon Welch worked the pit road for the radio side.