thumb|200px|The area of Tomamae District in Rumoi Subprefecture.
is a district located in Rumoi Subprefecture, Hokkaido, Japan.
As of 2004, the district has an estimated population of 14,828 and a density of 12.28 persons per km<sup>2</sup>. The total area is 1,207.03 km<sup>2</sup>.
Towns and villages
- Haboro
- Shosanbetsu
- Tomamae