Tomata (苫田郡 Tomata-gun?) is a district located in Okayama Prefecture, Japan.
As of 2003, the district has an estimated population of 20,631 and a population density of 33.22 persons per km². The total area is 621.03 km².
Coordinates: 35°12′36″N 133°53′53″E / 35.21000°N 133.89806°E