Kaida, Nagano
[file:旧開田村役場.jpg|thumb|former Kaida List of villages in Japan|village hall]
Kaida was a village located in Kiso District, Nagano Prefecture, Japan.
As of 2003, the village had an estimated population of 2,026 and a density of 13.55 persons per km2. The total area was 149.54 km2.
On November 1, 2005, Kaida, along with the town of Kisofukushima, and the villages of Hiyoshi and Mitake, was merged to create the town of Kiso.