| Country: | Japan |
| Weight Class: | 81 kg, 90 kg, 100 kg |
| Rank Ref: | [1] |
| Dan: | 6 |
| Worlds Rank: | 3 |
| Worlds Year: | 2005 |
| Worlds Weight: | Men's 81 kg |
| Worlds Year2: | 2011 |
| Worlds Weight2: | Men's 90 kg |
| Regionals Type: | AS |
| Regionals Rank: | 1 |
| Regionals Year: | 2005 |
| Regionals Year2: | 2010 |
| Regionals Weight2: | Men's 90 kg |
| Olympics Rank: | R32 |
| Olympics Year: | 2008 |
| Olympics Weight: | Men's 81 kg |
| Updated: | 17 July 2023 |
is a Japanese judoka and winner of the 2005 Asian Judo Championships gold medal at the −81 kg category.
Ono is from Ishige, Ibaraki,[2] and has studied Judo alongside Keiji Suzuki since childhood.[3] After graduating from Tsukuba University, he joined Ryotokuji Gakuen,[4] of which Yusuke Kanamaru, Tomoo Torii, and former Asian champion Yuta Yazaki are also members. He won the all Japanese championships from 2008 to 2010 and, although the favorite at the Tokyo 2010 World Championships, was eliminated in the 3rd round by former Olympic champion Ilias Iliadis. Ono is renowned for his uchi mata (inner thigh throw). He is also well known for his Ōuchi gari (大内刈 major inside leg reap). In 2009–2010, Ono was regarded as one of the most exciting judoka in the world. Despite his popularity, he lost his place in the 2012 Olympics; Japan instead chose Masashi Nishiyama at 90 kg.