People with the last name Niwa in New Jersey
- Akiko Niwa
- Akira Niwa
- Aleksander Niwa
- Brad Niwa
- Bryan Niwa
- Duarte Niwa
- Edward Niwa
- Evelyn Niwa
- Hiroko Niwa
- Kazuko Niwa
- Keiko Niwa
- Kiyohiko Niwa
- Koji Niwa
- Masamitsu Niwa
- Mitsuyo Niwa
- Naohiro Niwa
- Seiyuh Niwa
- Shigekapsu Niwa
- Takashi Niwa
- Tsukumo Niwa
- Yoshiyuki Niwa
- Yukiko Niwa
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