Lionel Hugonnier (born 17 April 1973) is a French former judoka and ju jitsuka athlete competing in the (under 90 kg) category for Judo and light heavyweight (under 92 kg) in Ju Jitsu.After he did his military service at Bataillon de Joinville in 1993, he joined INSEP in his hometown Lyon.
In 1994, for his 1st international selection at the age of 21, he became World Champion in Ju Jitsu, making him one of the youngest athletes to ever hold this title.
In 1995, he won the European Champion title.
In 1996 in Coubertin (Paris), he defended his title as World Champion in front of his fans and he held the title for the second time.
His numerous medals made him one of the most decorated athletes in Ju-jitsuka in France with his club team member Bertrand Amoussou.
He withdrew from the competing in Ju Jitsu in 1996 and ended his career without any defeat.
In 1997, after his French Champion title in Judo, he joined the French team, under the direction of René Rambier.
He remained with PSG Judo throughout his career, with partner clubs David Douillet, Djamel Bouras under the direction of Thierry Rey.
Medalist in global tournaments, including 2 medals at the International Tournament of the City of Paris (bronze in 1998 and silver in 2002), he then competed for the French team in the 1998 World Cup in Minsk (Belarus) and won third place.
His successful career in athletics came to an end after a shoulder injury in 2003.