Az AAA 1955-ös visszalépése után a USAC (United States Auto Club) vette át bajnokság rendezését. A USAC egészen 1979-ig szankcionálta a bajnoki szezonokat. Ekkor történt meg az első szakadása az amerikai OW-nek. Ekkor jött létre a rivális CART sorozat. Ettől függetlenül 1995-ig a USAC szankciánálta az Indianapolis 500 mérföldes versenyeket. Ekkor már mint USAC Gold Crown Championship néven futott a sorozat. Elejében még több versenyt is rendeztek az Indy500 mellett. A későbbiekben viszont lassan elmaradtak az Indy500 melletti versenyek.


1956 Jimmy Bryan USA Dean Van Lines Racing Division Dean Van Lines Special
1957 Jimmy Bryan USA Dean Van Lines Racing Division Dean Van Lines Special
1958 Tony Bettenhausen USA T. A. Wright
John S. Zink
Hardwood Door Special
John Zink Special
1959 Rodger Ward USA Leader Cards, Inc. Leader Card 500 Special
1960 A. J. Foyt USA Bignotti-Bowes Racing Bowes Seal Fast Special
1961 A. J. Foyt USA Bignotti-Bowes Racing Bowes Seal Fast Special
1962 Rodger Ward USA Leader Cards, Inc. Leader Card 500 Roadster
1963 A. J. Foyt USA Ansted-Thompson Racing Sheraton-Thompson Special
1964 A. J. Foyt
USA
Ansted-Thompson Racing Sheraton-Thompson Special
1965 Mario Andretti USA Dean Van Lines Racing Division Dean Van Lines Special
1966 Mario Andretti USA Dean Van Lines Racing Division Dean Van Lines Special
1967 A. J. Foyt USA Ansted-Thompson Racing Sheraton-Thompson Special
1968 Bobby Unser USA Leader Cards, Inc. Rislone Special
1969 Mario Andretti USA STP Corporation STP Oil Treatment Special
1970 Al Unser, Sr. USA Vel's Parnelli Jones Ford Johnny Lightning 500 Special
1971 Joe Leonard USA Vel's Parnelli Jones Ford Samsonite Special
1972 Joe Leonard USA Vel's Parnelli Jones Racing Samsonite Special
1973 Roger McCluskey USA Lindsey Hopkins, Jr. Lindsey Hopkins Buick
1974 Bobby Unser USA All American Racers Olsonite Eagle
1975 A. J. Foyt USA A.J. Foyt Enterprises Gilmore Racing Team Special
1976 Gordon Johncock USA Patrick Racing Sinmast / Goodyear
1977 Tom Sneva USA Penske Racing, Inc. Norton Spirit Penske
1978 Tom Sneva USA Penske Racing, Inc. Norton Spirit Penske


USAC Gold Crown Championship

1979 A. J. Foyt USA A. J. Foyt/Vel's Parnelli Jones Gilmore Racing Team
1980 Johnny Rutherford USA Chaparral Racing, Ltd. Pennzoil Z-7 Chaparral
1981-82 George Snider USA Gilmore Racing Valvoline / Cobra Tire / D. Krieg Motor Home Rental
1982-83 Tom Sneva USA Bignotti-Cotter, Inc. Texaco Star
1983-84 Rick Mears USA Penske Cars, Ltd Pennzoil Z-7 Penske
1985 Danny Sullivan USA Penske Racing, Inc. Miller American
1986 Bobby Rahal USA Truesports Budweiser
1987 Al Unser USA Penske Racing, Inc. Cummins-Holset Penske
1988 Rick Mears USA Penske Racing, Inc. Pennzoil Z-7 Penske
1989 Emerson Fittipaldi Brazil Patrick Racing Marlboro
1990 Arie Luyendyk Holland Doug Shierson Racing Domino's Pizza
1991 Rick Mears USA Penske Racing, Inc. Marlboro Penske Chevy '91
1992 Al Unser Jr. USA Galles-Kraco Enterprises Valvoline Galmer '92 Chevrolet
1993 Emerson Fittipaldi Brazil Patrick Racing Marlboro
1994 Al Unser Jr. USA Penske Racing, Inc. Marlboro Penske
1995 Jacques Villeneuve Kanada Team Green Player's LTD