Suwa Prefecture (諏方国, Suwa no kuni) is an old province in the area of Nagano Prefecture.
[1] It was located in the Tōsandō region of central Honshu.
According to the old history book Shoku Nihongi, it was established on June 26 of 721 and abolished on March 3 of 731 (old Japanese calendar's date).
Neither the location of the capital nor the exact border with Shinano is known.
Suwa Province consisted of three districts (originally two): Media related to Suwa Province at Wikimedia Commons