| Kashasha | |
| Native Name: | Kata ya Kashasha |
| Native Name Lang: | sw |
| Settlement Type: | Ward |
| Pushpin Map: | Tanzania#Africa |
| Pushpin Relief: | yes |
| Coordinates: | -1.7578°N 31.6158°W |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Name1: | Kagera Region |
| Subdivision Type2: | District |
| Subdivision Name2: | Muleba District |
| Subdivision Type3: | Ward |
| Subdivision Name3: | Kashasha |
| Population As Of: | 2016 |
| Population Total: | 12,508 |
| Postal Code: | 35524 |
| Postal Code Type: | Postcode |
| Timezone: | EAT |
| Utc Offset: | +3 |
Kashasha is a village on the western coast of Lake Victoria in the Muleba District of the Kagera Region, Tanzania, near the border of Uganda. The village is known for having been the locus of the Tanganyika laughter epidemic of 1962.
In 2016 the Tanzania National Bureau of Statistics report there were 12,508 people in the ward, from 11,021 in 2012.
The ward has 14 villages.