| Koji Aoyama | |
| Position: | Pitcher / Coach |
| Team: | Tohoku Rakuten Golden Eagles |
| Number: | 81 |
| Birth Date: | 12 August 1983 |
| Bats: | Right |
| Throws: | Right |
| Debutleague: | NPB |
| Debutdate: | March 25 |
| Debutyear: | 2006 |
| Debutteam: | Tohoku Rakuten Golden Eagles |
| Finaldate: | September 29 |
| Finalyear: | 2020 |
| Finalteam: | Tohoku Rakuten Golden Eagles |
| Finalleague: | NPB |
| Statyear: | 2020 season |
| Statleague: | NPB |
| Stat1label: | Win–loss record |
| Stat1value: | 42-58 |
| Stat2label: | ERA |
| Stat2value: | 3.67 |
| Stat3label: | Strikeouts |
| Stat3value: | 713 |
| Stat4label: | Saves |
| Stat4value: | 45 |
| Stat5label: | Holds |
| Stat5value: | 159 |
| Teams: | As player
As player
|
| Awards: |
|
Koji Aoyama (青山 浩二, born August 12, 1983) is a Japanese former professional baseball pitcher. He has played in his entire career with the Nippon Professional Baseball (NPB) for the Tohoku Rakuten Golden Eagles.
Tohoku Rakuten Golden Eagles selected Aoyama with the third selection in the .[1]
On March 25, 2006, Aoyama made his NPB debut.
On November 21, 2020, Aoyama announced his retirement.[2]