Sunagawa (砂川市, Sunagawa-shi) is a city located in Sorachi Subprefecture, Hokkaido, Japan.

As of August 2024, the city has an estimated population of 15,340 and a population density of 190 people per km. The total area is 78.69 km.

The city was designated as the first "Amenity Town" in Hokkaido in 1984 (Showa 59). As an Amenity Town, Sunagawa contains lot of greenery, such as parks.

Name of Sunagawa is derived from an Ainu word "Ota-ushi-nai", meaning the river near sandy shore.

• 1890 - Nae Village founded.
• 1895 - Nae Village Office opened.
• 1897 - Utashinai Village splits off .
• 1902 - Nae becomes a Second Class Municipality.
• 1903 - Nae Village becomes Sunagawa Village.
• 1907 - Sunagawa becomes a First Class Municipality.
• 1923 - Sunagawa Village becomes Sunagawa Town.
• 1944 - Naie Village splits off.
• 1949 - Kamisunagawa Town splits off.
• July 1, 1958 - Sunagawa Town becomes Sunagawa City.

• Hokkaido Sunagawa High School.

• Hakodate Main Line : Toyonuma - Sunagawa
• Hokkaidō Expressway : Naie-Sunagawa IC (Naie) - Sunanaga SA - Takikawa IC (Takikawa)

• Mitsuya Nagai (born 1968), Japanese mixed martial artist, kickboxer and professional wrestler (Real Name: Hirokazu Nagai, Nihongo: 長井 弘和, Nagai Hirokazu)
• Junichi Watanabe (1933–2014), Japanese writer and doctor

• Official Website (in Japanese)