Agano (阿賀野市, Agano-shi) is a city located in Niigata Prefecture, Japan.

Agano has a Humid climate (Köppen Cfa) characterized by warm, wet summers and cold winters with heavy snowfall.

[3] Per Japanese census data,[4] the population of Agano was relatively stable throughout the late 20th century but has declined in the 21st.

The area was organised as part of Kitakanbara District, Niigata following the Meiji restoration, and the town of Suibara and villages of Yasuda, Kyōgase and Sasakami were established with the creation of the modern municipalities system on April 1, 1889.

[2] Agano has a mayor-council form of government with a directly elected mayor and a unicameral city legislature of 20 members.