Kaifu (海部郡, Kaifu-gun) is a district located in Tokushima Prefecture, Japan.
As of June 1, 2019, the district has an estimated population of 18,863 and a population density of 35.9 inhabitants per square kilometre (93/sq mi). The total area is 525.07 km2 (202.73 sq mi).
美波町は、平成18年3月31日、日和佐町と由岐町が合併して、誕生しました。
33°41′28″N 134°22′30″E / 33.691°N 134.375°E