Hiroshi Kaino (甲斐野 央, Kaino Hiroshi, born November 16, 1996) is a Japanese professional baseball pitcher for the Saitama Seibu Lions of Nippon Professional Baseball.

[2] In 2019, the rookie year, he finished the regular season with a 2–5 Win–loss record, a 4.14 ERA, 73 strikeouts in 58+2⁄3 innings, 26 Holds, and 8 saves.

On July 1, 2023, Kaino pitched as a closer against the Saitama Seibu Lions and recorded a save for the first time in two years.

On January 11, 2024, Kaino transferred to the Saitama Seibu Lions to compensate for Hotaka Yamakawa go to the Fukuoka SoftBank Hawks via free agent.

[7] On October 24, 2019, he was selected as the Japan national baseball team in the 2019 WBSC Premier12.