| Conventional Long Name: | Vaiga |
| Common Name: | Vaiga |
| Subdivision: | county |
| Nation: | Ancient Estonia |
| Event End: | Livonian Crusade |
| Year End: | 1224 |
| S1: | Monastic state of the Teutonic Knights |
| Image Map Caption: | Ancient Estonian counties |
Vaiga was a small landlocked ancient Estonian county in the eastern part of the territory of Estonia. It territory now belongs to the eastern part of Jõgeva County.