| Wassamu | |
| Native Name Lang: | ja |
| Settlement Type: | Town |
| Pushpin Map: | Japan |
| Pushpin Map Caption: | Location in Japan |
| Coordinates: | 44.0167°N 167°W |
| Subdivision Type: | Country |
| Subdivision Name: | Japan |
| Subdivision Type1: | Region |
| Subdivision Name1: | Hokkaido |
| Subdivision Type2: | Prefecture |
| Subdivision Name2: | Hokkaido (Kamikawa Subprefecture) |
| Subdivision Type3: | District |
| Subdivision Name3: | Kamikawa (Teshio) |
| Leader Title: | Mayor |
| Leader Title1: | Vice Mayor |
| Unit Pref: | Metric |
| Area Total Km2: | 224.83 |
| Population Total: | 3,553 |
| Population As Of: | September 30, 2016 |
| Population Density Km2: | auto |
| Timezone1: | JST |
| Utc Offset1: | +09:00 |
| Blank Name Sec1: | City hall address |
| Blank Name Sec2: | Climate |
| Blank Info Sec2: | Dfb |
is a town located in Kamikawa Subprefecture, Hokkaido, Japan.
As of September 2016, the town has an estimated population of 3,553 and a population density of 15.8 persons per km2. The total area is 224.83 km2.
The town flower is the Katakuri. Wassamu is famous for its pumpkin and cabbage crops.
Wassamu has 3 schools, a middle school, an elementary school and a kindergarten. It previously had a high school, however, was closed due to lack of numbers.
It is linked with the Dōō Expressway at Interchange 12 which was first opened on October 4, 2000, and extended to Kembuchi-Shibetsu on October 4, 2003. Wassamu is also linked by train and Route 40 and prefectural roads 48 and 99.