László Cseh (; born 3 December 1985) is a retired Hungarian competitive swimmer and six-time Olympic medalist. He is a 33-time European Champion. His father, László Cseh Sr., also represented Hungary at the Olympics in swimming. In 2020 Braden Keith of SwimSwam nominated him as number 1 within top 10 male swimmers who have never won Olympic gold. Personal The son of an Olympic swimmer, Cseh started swimming competitively at an early age. Cseh is coached by György Turi and Zoltán Nemes. He holds a scholarship with the Olympic Solidarity programme. Swimming career At the 2003 World Championships, Cseh captured a silver medal in the 400 m individual medley, his first medal at the highest level. He also finished 7th and 13th in the 100 and 200 metres backstroke, all in national record time. 2004 Olympics Cseh represented Hungary at the 2004 Summer Olympics in Athens, Greece in the 400 m individual medley, 100 m backstroke, and the 200 m individual medley, despite having broken his ankle in the training camp on a stairway a couple of weeks before. Nevertheless, he won a bronze medal in the 400 m individual medley as well as coming in fourth in the 200 m individual medley, and sixth in the 100 m backstroke. At the 2005 World Championships, Cseh not only improved his national records, he excelled further up in the world rankings, and entered the meet as a serious medal contender in 3 events. After Michael Phelps backed out of the 400 m individual medley, Cseh picked up his first gold medal at the world championships. Cseh failed to back up his previous performances in the 2007 World Championships, finishing outside the medals in the 400 m individual medley; however he did set a new national record in the 200 m individual medley, along with testing out the 200 m freestyle. 2008 Olympics Cseh represented Hungary at the 2008 Summer Olympics in Beijing in three swimming events: the 400 m individual medley, the 200 m butterfly, and the 200 m individual medley. Despite setting the European record in all of them, he won the silver medal in each and came in second behind American Michael Phelps, who won each event with a new world record. In both individual medleys, Cseh came out ahead of the bronze-medal winner Ryan Lochte. At the 2009 World Championships, Cseh was rushed to hospital on arrival in