| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Jaanessa | city | Viljandimaa | Estonia | 58.3394444 | 25.8236111 | 216 | 1610 |
| Jakobimoisa | city | Viljandimaa | Estonia | 58.2077778 | 25.8863889 | 236 | 1613 |
| Jakobimõisa | city | Viljandimaa | Estonia | 58.2077778 | 25.8863889 | 236 | 1613 |
| Jalevere | city | Viljandimaa | Estonia | 58.6013889 | 25.4138889 | 170 | 1508 |
| Jamejala | city | Viljandimaa | Estonia | 58.3894444 | 25.5661111 | 337 | 1610 |
| Jaravere | city | Viljandimaa | Estonia | 58.4208333 | 25.3969444 | 252 | 1607 |
| Jartsaare | city | Viljandimaa | Estonia | 58.5544444 | 25.83 | 200 | 1546 |
| Jarve | city | Viljandimaa | Estonia | 58.1769444 | 25.9705556 | 187 | 1304 |
| Jarvekula | city | Viljandimaa | Estonia | 58.1769444 | 25.9705556 | 187 | 1304 |
| Jarvo | city | Viljandimaa | Estonia | 58.1769444 | 25.9705556 | 187 | 1304 |
| Jaska | city | Viljandimaa | Estonia | 58.5411111 | 25.5897222 | 203 | 1601 |
| Jatevere | city | Viljandimaa | Estonia | 58.6013889 | 25.4138889 | 170 | 1508 |
| Joekula | city | Viljandimaa | Estonia | 58.3972222 | 25.9138889 | 170 | 1598 |
| Joesuu | city | Viljandimaa | Estonia | 58.3827778 | 26.1361111 | 154 | 2063 |
| Jälevere | city | Viljandimaa | Estonia | 58.6013889 | 25.4138889 | 170 | 1508 |
| Jämejala | city | Viljandimaa | Estonia | 58.3894444 | 25.5661111 | 337 | 1610 |
| Järavere | city | Viljandimaa | Estonia | 58.4208333 | 25.3969444 | 252 | 1607 |
| Järtsaare | city | Viljandimaa | Estonia | 58.5544444 | 25.83 | 200 | 1546 |
| Järve | city | Viljandimaa | Estonia | 58.1769444 | 25.9705556 | 187 | 1304 |
| Järveküla | city | Viljandimaa | Estonia | 58.1769444 | 25.9705556 | 187 | 1304 |
| Jätevere | city | Viljandimaa | Estonia | 58.6013889 | 25.4138889 | 170 | 1508 |
| Jõeküla | city | Viljandimaa | Estonia | 58.3972222 | 25.9138889 | 170 | 1598 |
| Jõesuu | city | Viljandimaa | Estonia | 58.3827778 | 26.1361111 | 154 | 2063 |
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