In the 1968 Tour de France, there was a special prize given in his honour, the Souvenir Tom Simpson, a sprint on stage 15 in the small town of Mirepoix, won by the soloing Roger Pingeon. Winner of the race Jan Janssen said of him, "Occasionally Tommy could be annoying. When it was rolling along at 30kmh and - paf!… he’d attack. Oh leave us alone! There's still 150km to go pipe down. But often, he wanted war." Janssen went on to say, "Even in the feed zones. It's not the law, but it's not polite. Musettes (lunch bags) were up in the air there was panic and crashes. It was Simpson acting like a jerk. It didn't happen often. Occasionally I was angry at him. I’d say to him in his native English: You fucking cunt... There were often many teams, five or six, in the same hotel together every evening. Each had their own table. And at a certain moment, Tommy walked into the restaurant like a gentleman, with a cane, bowler hat and in costume… He was like a Lord in England and the rest of us were in tracksuits. Everyone saw that, laughed, and the things he had done during the race were forgotten."
A granite memorial to Simpson, with the words "Olympic medallist, world champion, British sporting ambassador", stands on the spot where he collapsed and died on Ventoux, one kilometre east of the summit. Cycling began a fund for a monument a week after Simpson's death, raising about £1,500. The memorial was unveiled in 1968. It has become a site of pilgrimage for cyclists, who frequently leave cycling-related objects, such as water bottles and caps, in tribute. In nearby Bédoin, a plaque was installed in the town square by journalists following the 1967 Tour. The Harworth and Bircotes Sports and Social Club has a small museum dedicated to Simpson, opened by Belgian cyclist Lucien Van Impe in August 2001. In 1997, to commemorate the 30th anniversary of his death, a small plaque was added to the Mont Ventoux memorial, with the words "There is no mountain too high. Your daughters Jane and Joanne, July 13, 1997", and a replica of the memorial was erected outside the museum. In his adopted hometown of Ghent, there is a bust of Simpson at the entrance to the Kuipke velodrome. Every year since his death, the Tom Simpson Memorial Race has taken place in Harworth.