Niwa
- Daiki Niwa (D.N.Angel)
- Daisuke Niwa
- Emiko Niwa
- Kosuke Niwa
- National Institute of Water and Atmospheric Research
- Nina (name)
- Nintendo
- Niwa (surname)
- Niwa District, Aichi
- Niwa Station
- Niwa clan
- Niwa, Lower Silesian Voivodeship
- Niwa, Lubaczów County
- Niwa, Masovian Voivodeship
- Niwa, Opole Voivodeship
- Niwa, Puławy County
- Niwa, Tarnobrzeg County
- Niwa, Zamość County
- Niwa, Łódź Voivodeship
- Niña (name)
- Wiki