Terai (寺井町 Terai-machi) was a town located in Nomi District, Ishikawa, Japan.
On February 1, 2005, Terai was merged with the towns of Neagari and Tatsunokuchi, all from Nomi District, to form the new city of Nomi and no longer exists as an independent municipality.
In 2003, the town had an estimated population of 15,874 and a density of 1,207.15 per km². The total area was 13.15 km².