| Võivaku | |
| Settlement Type: | Village |
| Pushpin Map: | Estonia |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location in Estonia |
| Coordinates: | 58.4842°N 25.6083°W |
| Subdivision Type: | Country |
| Subdivision Name: | Estonia |
| Subdivision Type1: | County |
| Subdivision Name1: | Viljandi County |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Põhja-Sakala Parish |
| Population Total: | 101 [1] |
| Population As Of: | 2015 |
Võivaku is a village in Põhja-Sakala Parish, Viljandi County, located 13km (08miles) north of the town of Viljandi, 8.8km (05.5miles) north of the small borough of Olustvere and 10km (10miles) southwest of the town of Suure-Jaani.[2] The population of Võivaku as of 2015 was 101,[3] a decrease from 106 in the 2000 census.[4]