| Position | Infielder / Coach |
|---|---|
| Team | Tohoku Rakuten Golden Eagles |
| Number | 83 |
| Birth date | April 3, 1979 (age 47) |
| Birth place | Jōtō-ku, Osaka, Japan |
| Bats | Right |
| Throws | Right |
| Debutleague | NPB |
| Debutyear | 2001 |
| Debutteam | Chiba Lotte Marines |
| Finalleague | NPB |
| Finaldate | April 13 |
| Finalyear | 2012 |
| Finalteam | Chiba Lotte Marines |
| Statleague | NPB |
| Stat1label | Batting average |
| Stat1value | .207 |
| Stat2label | Home runs |
| Stat2value | 11 |
| Stat3label | RBI |
| Stat3value | 71 |
| Teams | As player As coach
|
Masato Watanabe (渡辺 正人, born April 3, 1979, in Osaka) is a Japanese former professional baseball infielder. He played in Nippon Professional Baseball (NPB) for the Chiba Lotte Marines from 2001 to 2012.