The name NASCAR Grand National Series refers to former names of the following NASCAR series:
National-level stock car series: NASCAR Cup Series (the top NASCAR series, known as NASCAR Grand National Series between 1950 and 1970, then the NASCAR Winston Cup Grand National Series between 1971 and 1986) NASCAR O'Reilly Auto Parts Series (the second highest NASCAR series, known as NASCAR Busch Grand National Series between 1986 and 2003) Regional-level stock car series (termed as Grand National Division by NASCAR): ARCA Menards Series East (known as NASCAR Busch Grand National North Series between 1987 and 1993; later formally known as NASCAR Grand National Division East Series) ARCA Menards Series West (known as NASCAR Grand National West in 1970; later formally known as NASCAR Grand National Division West Series) NASCAR Grand National East Series (held in 1972 and 1973)