Takamasa Anai is a Japanese judoka.

Hisayoshi Harasawa is a Japanese judoka.

Isao Inokuma was a judoka. He won a gold medal in the heavyweight division at the 1964 Summer Olympics in Tokyo and a world title in 1965.

Kosei Inoue is a Judo practitioner from Japan. He won the gold medal in the under 100 kg class at the 2000 Summer Olympics. He is well known for his specialty throws, Uchi Mata and Ōuchi gari.

Satoshi Ishii is a Japanese-Croatian judoka, mixed martial artist, kickboxer and submission grappler.

Akio Kaminaga was a Japanese judoka who won a silver medal in the open weight category at the 1964 Summer Olympics.

Takao Kawaguchi is a retired judoka who competed in the -63 kg division.

Noriko Mizoguchi is a retired judoka from Japan.

Takanori Nagase is a Japanese judoka.

Takehide Nakatani is a retired judoka who won the first gold medal ever awarded in judo at the Summer Olympics as the Japanese competitor in the lightweight (-68 kg) division.

Riki Nakaya is a Japanese judoka. He is a two-time lightweight world champion and an Olympic silver medalist. He was also a finalist at the 2015 World Championships.
Tadahiro Nomura is one of the most famous judo competitors in Japan. He is the only judoka in the world who has won three Olympic gold medals in a row, all in the extra lightweight (-60 kg) division.

Toyokazu Nomura is a retired judoka who competed in the half-middleweight (70 kg) division.

Naoya Ogawa is a Japanese Olympic and world champion judoka, retired professional wrestler, and mixed martial artist. He won a total of seven medals at the All-Japan Judo Championships, and set a record of seven medals at the World Judo Championships. Ogawa won the silver medal in the +95 kg judo weight class at the 1992 Summer Olympics.

Isao Okano is a retired judoka who competed in the middleweight (−80 kg) division in the 1964 Summer Olympics.

Shohei Ono is a Japanese judoka.

Hitoshi Saito was a Japanese judoka who won two consecutive gold medals at the Olympic games.

Shinobu Sekine was a Japanese middleweight judoka. He won a gold medal at his only Olympics in 1972.
Shinichi Shinohara is a retired Japanese judo and winner of the gold medal at the 1999 World Judo Championships in Birmingham. To Shinohara's disappointment, French champion David Douillet did not compete at Birmingham due to back injury; Shinohara was quoted as saying, "Even though I lifted the double crown at the worlds, it won't mean anything as long as people say it was won in Douillet's absence." Douillet had previously been declared victor at the 1997 championships in Paris after a French judge gave Shinohara a controversial penalty.

Masatoshi Shinomaki is a retired Japanese heavyweight judoka, who won the world title in the open category in 1969 and 1971, placing third in 1967. He also competed at the 1972 Summer Olympics.

Keiji Suzuki is a Japanese judoka.

Funa Tonaki is a Japanese judoka. She won a silver medal in Women's Judo 48 kg, at the 2020 Summer Olympics held in Tokyo, Japan.

Masato Uchishiba is a Japanese judoka who won the gold medal in the men's under 66 kg division at the 2004 Summer Olympics in Athens, Greece, and at the 2008 Summer Olympics in Beijing, China.

Kanae Yamabe is a female Japanese judoka.

Yasuhiro Yamashita is a Japanese judoka. He currently works as an instructor or advisor for numerous organizations, including Tokai University, the International Judo Federation, and the All Japan Judo Federation. He retired from competitive judo on June 17, 1985 after a remarkable career where he won five gold medals in international competitions and marked 203 consecutive victories until his retirement. He received the Japanese National Prize of Honor on October 9, 1984.
Hidehiko Yoshida is a Japanese gold-medalist judoka and retired mixed martial artist. He is a longtime veteran of Japan's PRIDE Fighting Championships, competing in the Middleweight (93kg) and Heavyweight divisions. He won gold at the 1992 Summer Olympic Games at 78 kg. Yoshida also had two famous fights with MMA pioneer Royce Gracie that resulted in a no-contest and a time-limit draw.