Kawashima was a town located in Oe District, Tokushima Prefecture, Japan. As of 2003, the town had an estimated population of 8,484 and a population density of 479.59 persons per km2. The total area was 17.69 km2. On October 1, 2004, Kawashima, along with the towns of Kamojima and Yamakawa, and the village of Misato (all from Oe District), was merged to create the new city of Yoshinogawa.