People with the last name Niwa in Pennsylvania
- Anthony Niwa
- Chris Niwa
- Cristal Niwa
- Daniel Niwa
- Debbie Niwa
- Deborah Niwa
- Deliliah Niwa
- E Niwa
- Hideo Niwa
- Hiroko Niwa
- Katharine Niwa
- Kazuko Niwa
- Keddy Niwa
- Marisa Niwa
- Mary Niwa
- Mia Niwa
- Mihoko Niwa
- Patricia Niwa
- Sae Niwa
- Shu Niwa
- Stanley Niwa
- Walter Niwa
- Yoshitaka Niwa
- Yuko Niwa
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