Koji Aoyama (éÂÂå±± 浩äºÂ, born August 12, 1983) is a Japanese former professional baseball pitcher. He played in Nippon Professional Baseball (NPB) from 2006 to 2020 for the Tohoku Rakuten Golden Eagles.
Tohoku Rakuten Golden Eagles selected Aoyama with the third selection in the .
On March 25, 2006, Aoyama made his NPB debut.
On November 21, 2020, Aoyama announced his retirement.