1975 NASCAR Winston Cup Series

Richard Petty, the 1975 NASCAR Winston Cup Series Champion. This would be his 6th of his 7 championships.

The 1975 NASCAR Grand National Winston Cup Series was the 27th season of professional stock car racing in the United States and the 4th season in the modern era of the NASCAR Cup series. The season began on Sunday, January 19 and ended on Sunday, November 12. Richard Petty, driving the #43 Petty Enterprises STP Dodge scored his sixth NASCAR Grand National Series Winston Cup Championship. Bruce Hill was named NASCAR Rookie of the Year. NASCAR introduced a new points system for 1975, a system designed by statistician Bob Latford. For the first time, each race on the NASCAR Winston Cup Grand National schedule carried an equal point value, a system that would be used for 36 seasons, from 1975 to 2010, with modifications in 2004 and 2007 each time by increasing the emphasis for a win in adding five additional points each time for a race winner. The original points system ran for the first 29 seasons, from 1975 to 2003.

Richard Petty's championship would also be the last for Chrysler Corporation, and the last for a Dodge driver until Brad Keselowski in 2012.