Iga (伊賀町, Iga-chō) was a town located in Ayama District, Mie Prefecture, Japan. On November 1, 2004, Iga absorbed the city of Ueno, the town of Ayama, the villages of Ōyamada and Shimagahara (all from Ayama District), and the town of Aoyama (from Naga District) to create the city of Iga.