The Sanriku Expressway (三陸自動車道, Sanriku Jidōsha-dō) is an incomplete expressway that exists in multiple segments in Miyagi Prefecture and Iwate Prefecture, Japan.

It is owned and operated by East Nippon Expressway Company (NEXCO East Japan), the Miyagi Prefecture Road Corporation, and the Ministry of Land, Infrastructure, Transport and Tourism (MLIT).

The region was named Sanriku in the aftermath of the Boshin War, the provinces of Mutsu and Dewa were divided.

When completed the Sanriku Expressway and Sanriku-kita Jūkan Road will span these three prefectures.

[2] The expressway is expected to be entirely completed by 2020 as part of a region-wide recovery effort from the 2011 Tōhoku earthquake and tsunami.