Ryo Miyaichi, Japanese footballer
Ryo Miyaichi (宮市 亮, Miyaichi Ryō, born 14 December 1992) is a Japanese professional footballer who plays as a winger for Yokohama F. Marinos in the J1 League. He played for the Japan national team in 2012.

Miyaichi has played in the Premier League with clubs such as Arsenal, Wigan Athletic and Bolton Wanderers. He as well featured for Feyenoord and Twente in the Eredivisie. Japan's former manager Alberto Zaccheroni has said that "Miyaichi's strengths are on the flanks and creating space going forward."