The Lotus 29 was a British racing car built by Team Lotus for the 1963 Indianapolis 500. It was their first attempt at the event and the two cars which were entered finished second and seventh in the hands of Jim Clark and Dan Gurney. Although they were not the first rear-engined cars built for the category, they were first to prove that the configuration was definitely a potential race-winner, and that the days of the big and heavy front-engined roadsters were numbered.

The 47th International 500-Mile Sweepstakes was held at the Indianapolis Motor Speedway in Speedway, Indiana on Thursday, May 30, 1963. Rufus Parnelli Jones took his only Indy 500 win. This win was controversial because his car spewed oil from a cracked overflow tank for many laps, which allegedly caused at least one driver to spin and crash. USAC officials put off black-flagging Jones after car owner J. C. Agajanian ran down pit lane and convinced them that the oil leak was below the level of a known crack and would not leak any further. Lotus owner Colin Chapman, whose English-built, rear-engined Lotus-Ford finished second in the hands of Scotsman Jim Clark, accused USAC officials of being biased in favor of the American driver and car.