The 23rd International 500-Mile Sweepstakes Race was held at the Indianapolis Motor Speedway on Thursday, May 30, 1935. Despite attempts to improve participant safety by requiring crash helmets and installing green and yellow lights around the track, the event that year would prove to be one of the worst in terms of fatalities. Kelly Petillo won the race, accompanied by riding mechanic Jimmy Dunham. Pete DePaolo, the 1925 winner, was the team principal, becoming the first individual to win the race separately as a driver and an owner. The race was part of the 1935 AAA Championship Car season.