| Mwayaya | |
| Native Name: | Kata ya Mwayaya |
| Native Name Lang: | sw |
| Settlement Type: | Ward |
| Pushpin Map: | Tanzania#Africa |
| Pushpin Relief: | yes |
| Coordinates: | -4.476°N 29.837°W |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Name1: | Kigoma Region |
| Subdivision Type2: | District |
| Subdivision Name2: | Buhigwe District |
| Subdivision Type3: | Ward |
| Subdivision Name3: | Mwayaya |
| Population As Of: | 2016 |
| Population Total: | 12,218 |
| Postal Code: | 47517 |
| Postal Code Type: | Postcode |
| Timezone: | EAT |
| Utc Offset: | +3 |
Mwayaya is an administrative ward in Buhigwe District of Kigoma Region of Tanzania. In 2016 the Tanzania National Bureau of Statistics report there were 12,218 people in the ward, from 20,416 in 2012.
The ward has 2 villages and 8 hamlets.