| Masato Nakazawa | |
| Position: | Pitcher |
| Bats: | Right |
| Throws: | Right |
| Birth Date: | 16 February 1985 |
| Birth Place: | Toyama, Toyama, Japan |
| Debutdate: | March 30 |
| Debutyear: | 2010 |
| Debutteam: | Tokyo Yakult Swallows |
| Finalyear: | 2020 |
| Finaldate: | October 3 |
| Finalteam: | Tokyo Yakult Swallows |
| Statyear: | 2020 season |
| Statleague: | NPB |
| Stat1label: | Win–loss record |
| Stat1value: | 13–15 |
| Stat2label: | Holds |
| Stat2value: | 21 |
| Stat3label: | ERA |
| Stat3value: | 5.16 |
| Stat4label: | Strikeouts |
| Stat4value: | 196 |
| Teams: | |
is a Japanese former professional baseball pitcher. He has played in Nippon Professional Baseball (NPB) for the Tokyo Yakult Swallows.
Tokyo Yakult Swallows selected Kazahari with the first selection in the .[1]
On March 30, 2010, Nakazawa made his NPB debut.
On October 24, 2020, Nakazawa announced his retirement.[2]