Iga-ryū (伊賀流, "the Iga School") is an umbrella term for ninjutsu traditions that come from the Iga region, according to Japanese legend. It became one of the two most well-known ninja traditions in Japan. The Iga-ryū traditions originated in the Iga Province in the area around the towns of Iga, Ueno, and Nabari (modern Iga City and Nabari City in Mie Prefecture). Iga-mono is a synonym for Iga ninja.