List of Famous people named Kosei

Kōsei Yoshida is a professional Japanese baseball player. He plays pitcher for the Hokkaido Nippon-Ham Fighters.

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.

Kousei Miura is a Japanese jockey who is represented by the Japan Racing Association. He won the 2008 JRA Award for Newcomer Jockey with the Most Victories and the 2014 Hokkaido Horse Racing Press Club Award.

Kosei Tanaka is a Japanese professional boxer. He is a three-weight world champion, having held the WBO mini-flyweight title from 2015 to 2016; the WBO junior-flyweight title from 2016 to 2017; and the WBO flyweight title from 2018 to 2020. Upon winning his first world title in only his fifth bout, he became the fastest Japanese fighter ever to become a world champion. Along with Vasyl Lomachenko, he is also the fastest ever fighter to win titles in three weight-classes, having accomplished the feat in only 12 bouts.

Kōsei Tomita was a Japanese actor and voice actor from Tokyo Prefecture who was affiliated with Aoni Production and Production Baobab. He voiced Doraemon in the first half of the original 1973 Doraemon series. He voiced Shunsaku Ban, also known as Mustachio (Higeoyaji) or Daddy Walrus, a character appearing in many of Osamu Tezuka's productions. He was known for dubbing over Ernest Borgnine, Orson Welles, Charles Durning, Burt Young, Lee J. Cobb and many more. He also lent his voice to the Japanese dubbing of Mario in Super Mario Bros. (film). He received an Achievement Award at the 3rd Seiyu Awards.

Kosei Tani is a Japanese football player. He plays for Shonan Bellmare on loan from Gamba Osaka. He is a goalkeeper.

Kōsei Ono is a Japanese rugby union player who plays at fly half for the Japan national rugby team.

Kosei Ishigami is a Japanese footballer who plays for Gainare Tottori.