The 2003 MBNA Armed Forces Family 400 was the 13th stock car race of the 2003 NASCAR Winston Cup Series season and the 35th iteration of the event. The race was held on Sunday, June 1, 2003, in Dover, Delaware at Dover International Speedway, a 1-mile (1.6 km) permanent oval-shaped racetrack. The race took the scheduled 400 laps to complete. At race's end, Penske Racing South driver Ryan Newman would manage to dominate the late stages of the race to take his third career NASCAR Winston Cup Series victory and his second victory of the season. To fill out the top 3, Hendrick Motorsports driver Jeff Gordon and Joe Gibbs Racing driver Bobby Labonte would finish second and third, respectively.