Iinuma

Iinuma (written: 飯沼) is a Japanese surname. Notable people with the surname include:


 * Masaaki Iinuma (飯沼 正明), Japanese aviator
 * Iinuma Sadakichi (飯沼 貞吉), Japanese samurai
 * Iinuma Yokusai (飯沼 慾斎), Japanese botanist and physician