Azai Nagamasa
was a daimyō in Mino Province during the Sengoku period and the third generation lord of the Saitō clan. He was a son of Saitō Yoshitatsu his mother was daughter of Azai Hisamasa and nephew of Azai Nagamasa, a grandson of Saitō Dōsan. He was also a nephew of Oda Nobunaga's first wife, Nohime, herself a daughter of Saitō Dōsan.