| 2003 Winston Cup Race Winners | |||
| Race | Location | Race Name | Winner |
| non points | Daytona Int'l Speedway | Budweiser Shootout | Dale Earnhardt, Jr |
| non points | Daytona Int'l Speedway | Gatorade 125s | Robby Gordon/Dale Earnhardt Jr |
| 1 | Daytona Int'l Speedway | Daytona 500 | Michael Waltrip |
| 2 | North Carolina Speedway | Subway 400 | Dale Jarrett |
| 3 | Las Vegas Motor Speedway | UAW-DaimlerChrysler 400 | Matt Kenseth |
| 4 | Atlanta Motor Speedway | Bass Pro Shops MBNA 500 | Bobby Labonte |
| 5 | Darlington Raceway | Carolina Dodge Dealers 400 | Ricky Craven |
| 6 | Bristol Motor Speedway | Food City 500 | Kurt Busch |
| 7 | Texas Motor Speedway | Samsung/Radio Shack 500 | Ryan Newman |
| 8 | Talladega Superspeedway | Aaron's 499 | Dale Earnhardt, Jr |
| 9 | Martinsville Speedway | Virginia 500 | Jeff Gordon |
| 10 | California Speedway | Auto Club 500 | Kurt Busch |
| 11 | Richmond Int'l Raceway | Pontiac Excitement 400 | Joe Nemechek |
| non points | Lowe's Motor Speedway | The Winston | Jimmie Johnson |
| 12 | Lowe's Motor Speedway | Coca-Cola 600 | Jimmie Johnson |
| 13 | Dover Int'l Speedway | MBNA America 400 | Ryan Newman |
| 14 | Pocono Raceway | Pocono 500 | Tony Stewart |
| 15 | Michigan Int'l Speedway | Sirius Satellite Radio 400 | Kurt Busch |
| 16 | Infineon Raceway | Dodge/Save Mart 350 | Robby Gordon |
| 17 | Daytona Int'l Speedway | Pepsi 400 | Greg Biffle |
| 18 | Chicagoland Speedway | Tropicana 400 | Ryan Newman |
| 19 | New Hampshire Int'l Speedway | New England 300 | Jimmie Johnson |
| 20 | Pocono Raceway | Pennsylvania 500 | Ryan Newman |
| 21 | Indianapolis Motor Speedway | Brickyard 400 | Kevin Harvick |
| 22 | Watkins Glen International | Sirius at The Glen | Robby Gordon |
| 23 | Michigan Int'l Speedway | Michigan 400 | Ryan Newman |
| 24 | Bristol Motor Speedway | Sharpie 500 | Kurt Busch |
| 25 | Darlington Raceway | Southern 500 | TERRY LABONTE |
| 26 | Richmond Int'l Raceway | Chevy Rock 'n Roll 400 | Ryan Newman |
| 27 | New Hampshire Int'l Speedway | Sylvania 300 | Jimmie Johnson |
| 28 | Dover Int'l Speedway | MBNA America 400 | Ryan Newman |
| 29 | Talladega Superspeedway | EA SPORTS 500 | Michael Waltrip |
| 30 | Kansas Speedway | Banquet 400 presented by ConAgra Foods | Ryan Newman |
| 31 | Lowe's Motor Speedway | UAW-GM Quality 500 | Tony Stewart |
| 32 | Martinsville Speedway | Subway 500 | Jeff Gordon |
| 33 | Atlanta Motor Speedway | Bass Pro Shops MBNA 500 | Jeff Gordon |
| 34 | Phoenix Int'l Raceway | Checker Auto Parts 500 | Dale Earnhardt, Jr |
| 35 | North Carolina Speedway | Pop Secret Microwave Popcorn 400 | Bill Elliott |
| 36 | Homestead-Miami Speedway | Ford 400 | Bobby Labonte |