Chiisagata (小県郡; -gun) is a district located in Nagano, Japan.

As of 2003, the district has an estimated population of 53,192 and a density of 86.31 persons per km². The total area is 616.31 km².

Towns and villages

• Aoki
• Maruko
• Nagato
• Sanada
• Takeshi
• Wada