| Daijiro Tanaka | |
| Position: | First baseman |
| Birth Date: | 29 April 1988 |
| Bats: | Left |
| Throws: | Left |
| Debutleague: | NPB |
| Debutyear: | 2008 |
| Debutteam: | Yomiuri Giants |
| Statyear: | 2011 |
| Statleague: | NPB |
| Stat1label: | Batting average |
| Stat1value: | .135 |
| Stat2label: | Home runs |
| Stat2value: | 0 |
| Stat3label: | RBI |
| Stat3value: | 1 |
| Teams: |
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is a Japanese former professional baseball first baseman who played for the Yomiuri Giants in Japan's Nippon Professional Baseball. He played with the Giants in 2008, 2009 and 2011.