The 1990 NASCAR Busch Series season began February 17 and ended October 28. Chuck Bown of Hensley Motorsports won the championship.
See also: 1990 in NASCAR
The Goody's 300 was held February 17 at Daytona International Speedway. Darrell Waltrip won the pole.
Top ten results
The Pontiac 200 was held February 24 at Richmond International Raceway. Michael Waltrip won the pole.
Top ten results
The Goodwrench 200 was held March 3 at North Carolina Speedway. Harry Gant won the pole.
Top ten results
The Miller Classic was a 200 lap race held March 11 at Martinsville Speedway. Tommy Ellis won the pole.
Top ten results
The Mountain Dew 400 was held March 25 at Hickory Motor Speedway. Chuck Bown won the pole.
Top ten results
The Pontiac 200 was held March 31 at Darlington Raceway. Kenny Wallace won the pole.
Top ten results
The Budweiser 250 was held April 7 at Bristol Motor Speedway. Bobby Labonte won the pole.