Teddy Pierre-Marie Riner (/ˈriːnər/, French: [tedi pjɛʁ maʁi ʁinœʁ]; born 7 April 1989) is a French heavyweight judoka. An eleven-time world champion in the heavyweight (+100 kg) division, two-time openweight world champion and one-time world champion with the French men's team, he is the first and only judoka in history to win twelve gold medals at the World Judo Championships. He is also the only judoka to be a five-time Olympic champion; having won the gold medal in the Men's +100 kg event at the Summer Olympics three times (2012, 2016 and 2024) and, as a member of the French team, in the mixed team event twice (2020 and 2024). Additionally, he is a two-time Olympic bronze medalist (2008 and 2020), a five-time European champion, a four-time World Masters gold medalist and eleven-time Grand Slam winner in his weight category.
Riner went undefeated between October 2010 and February 2020 before his winning streak was finally ended by Japanese judoka Kokoro Kageura in the third round of the 2020 Grand Slam Paris, marking Riner's first defeat in nearly a decade after 152 consecutive victories.