The Yamada Line (山田線, Yamada-sen) is a railway line in Japan operated by East Japan Railway Company (JR East). It originally connected Morioka Station in Morioka, Iwate to Kamaishi Station in Kamaishi, Iwate via Miyako Station in Miyako, Iwate. The tracks from Morioka Station to Miyako parallel the Hei River through a mountain valley. The Miyako to Kamaishi section, which parallels the Sanriku-Kaigan Sea, was extensively damaged by the 2011 Tōhoku earthquake and tsunami.