Kotonami (琴南町 Kotonami-chō?) was a town located in Nakatado District, Kagawa Prefecture, Japan.
As of 2003, the town had an estimated population of 3,056 and a density of 36.91 persons per km². The total area was 82.79 km².
On March 20, 2006, Kotonami, along with the town of Chūnan (also from Nakatado District), was merged into the expanded town of Mannō.