Iwanaga

Iwanaga (written: 岩永) is a Japanese surname. Notable people with the surname include:


 * Hiroaki Iwanaga (岩永 洋昭), Japanese model and actor
 * Hiromi Iwanaga (岩永 浩美), Japanese politician
 * Mineichi Iwanaga (岩永 峯一), Japanese politician
 * Rin Iwanaga (岩永 鈴), Japanese badminton athlete
 * Tetsuya Iwanaga (岩永 哲哉), Japanese voice actor