Niwa (surname)
# Niwa (surname)

Niwa is a Japanese surname. Notable people with the surname include:

* Niwa clan, retainer clan of the Oda clan during the Sengoku period of Japan (1603 – 1868)
   * Niwa Nagaaki, Daimyō of Nihonmatsu, 1796 – 1813
   * Niwa Nagahide, Daimyō of Shirakawa
   * Niwa Nagahiro, Daimyō of Nihonmatsu, 1868 – 1871
   * Niwa Nagakuni, Daimyō of Nihonmatsu, 1858 – 1868
   * Niwa Nagashige, Daimyō of Shirakawa, 1628 – 1638
   * Niwa Nagatomi, Daimyō of Nihonmatsu, 1813 – 1858
* Akemi Niwa (丹羽 明美, born 1973), Japanese curler, 1998 Winter Olympics participant
* Daiki Niwa (footballer), Japanese footballer
* Hideki Niwa, Japanese politician
* Koki Niwa, Japanese table tennis player
* Mikiho Niwa, Japanese actress
* Niwa Mitsushige (丹羽 光重, 1622–1701), Japanese samurai and daimyō
* Ryuhei Niwa, Japanese footballer
* Shion Niwa (丹羽 詩温, born 1994), Japanese footballer
* Uichiro Niwa, Japanese diplomat and businessman
* Yasujiro Niwa, Japanese scientist
* Yuya Niwa, Japanese politician
