Fuwa Mitsuharu (不破 光治, died December 14, 1583) was a Japanese samurai of the Sengoku and Azuchi-Momoyama periods. Originally a retainer of Saitō Dōsan, Mitsuharu went on to serve Oda Nobunaga, he received a land in Echizen Province and became a member of the so-called Echizen Sanninshu (Echizen Triumvir) along with Maeda Toshiie and Sassa Narimasa.