Ren Kazahari

is a Japanese professional baseball pitcher who is a free agent. He has previously played in Nippon Professional Baseball (NPB) for the Tokyo Yakult Swallows and Yokohama DeNA BayStars.

Career Tokyo Yakult Swallows Tokyo Yakult Swallows selected Kazahari with the third selection in the 2014 NPB draft.

On May 3, 2015, Kazahari made his NPB debut.

On December 2, 2020, he became a free agent.

Yokohama DeNA BayStars On December 10, 2020, Kazahari signed with Yokohama DeNA BayStars of NPB. Kazahari made five appearances for Yokohama in 2021, but struggled to a 7.71 ERA with six strikeouts over seven innings of work.

Wild Health Genomes On February 23, 2022, Kazahari signed with the Wild Health Genomes of the Atlantic League of Professional Baseball. Kazahari pitched in 4 games for the Genomes, struggling to a 9.64 ERA with 5 strikeouts in 4.2 innings pitched. He was released by the team on August 1.