Senmaya (千厩町, Senmaya-chō) is a town located in Higashiiwai District, Iwate Prefecture, Japan.

Senmaya village was created on April 1, 1889 with the establishment of the municipalities system.

On September 30, 1956, Senmaya annexed the neighboring villages of Iwashimizu, Okutama and Konashi.

On September 20, 2005, Senmaya, along with the towns of Daitō and Higashiyama, the villages of Kawasaki and Murone (all from Higashiiwai District), and the town of Hanaizumi (from Nishiiwai District), was merged into the expanded city of Ichinoseki and no longer exists as an independent municipality.

This Iwate Prefecture location article is a stub.