The 1975 National 500 was a NASCAR Winston Cup Series race that took place on October 5, 1975, at Charlotte Motor Speedway in Concord, North Carolina. The event was complemented by a Late Model Sportsman event that counted for points in the NASCAR-sanctioned World Service Life 300 (prior to 1982, drivers could drive as many Late Model Sportsman races combined on the short tracks and superspeedways) that, after NASCAR changed the format of the series in 1982, is now the NASCAR Xfinity Series after it became a touring format. Both of those races took place on the same race track.