Shin'etsu (信越地方 Shin'etsu Chihō?) is a geographical region of Japan.
The area encompasses the old provinces of Shinano and Echigo. Though the name is a combination of those two provinces, the region also contains Sado Island from Sado Province. It is located in the modern-day prefectures of Nagano and Niigata.
The name Shin-Etsu is used in the name of related multinational chemical companies.
The Shin'etsu Main Line is part of Japan Railways service running from Shinonoi Station in Nagano Prefecture to Niigata Station in Niigata Prefecture,.
In 1926, the Shinetsu Electric Company diversified as Shin'etsu Nitrogenous Fertilizer.