1978 in NASCAR

The 1978 NASCAR Grand National Winston Cup Series was the 30th season of professional in the United States and the 7th modern era NASCAR Cup series. The season began on Sunday, January 22 and ended on Sunday, November 19. Cale Yarborough driving the Junior Johnson #11 First National City Travelers Checks Oldsmobile won his then record third consecutive NASCAR Grand National Series Winston Cup Championship. Ronnie Thomas was crowned NASCAR Rookie of the Year in a tight battle with Roger Hamby.