Iizuna (飯綱町, Iizuna-machi) is a town located in the Kamiminochi District of northern Nagano Prefecture, Japan.

[2] Per Japanese census data,[3] the population of Iizuna was relatively stable throughout the late 20th century but has declined in recent decades.

During the Edo period, Mure developed as a post station on the Hokkoku Kaidō highway.

The modern town was created through a merger of the villages of Samizu and Mure on October 1, 2005.

The economy of Iizuna is agricultural, primarily rice cultivation and horticulture.