The 1970 Grand National Series was the 22nd season of the NASCAR Grand National Series. The season began with the Motor Trend 500 at Riverside International Raceway on January 18 and ended with the Tidewater 300 at Langley Field Speedway on November 22.
| Preceded by: 1969 Grand National Series |
Cup Seasons 1970 Grand National Series |
Succeeded by:<br./>1971 Winston Cup Series |