| Naan | 8 |
| Naar | 1 |
| Nagel | 4 |
| Nahk | 7 |
| Nahkur | 20 |
| Nappu | 2 |
| Napritson | 7 |
| Naris | 1 |
| Narits | 62 |
| Narrits | 15 |
| Nazarkin | 2 |
| Naudi | 2 |
| Naudre | 8 |
| Nautras | 122 |
| Neider | 36 |
| Neido | 1 |
| Neidre | 2 |
| Neliko | 12 |
| Neltan | 1 |
| Nemm | 2 |
| Nemvalt | 3 |
| Nemvalts | 4 |
| Nerman | 4 |
| Nesterenko | 2 |
| Nestra | 7 |
| Neuland | 8 |
| Neumann | 4 |
| Nidik | 13 |
| Niggul | 29 |
| Nigola | 67 |
| Nigul | 11 |
| Nihvelt | 4 |
| Niilo | 6 |
| Niine | 1 |
| Niinemägi | 14 |
| Niit | 1 |
| Niitvägi | 2 |
| Nikitin | 12 |
| Nikolajev | 2 |
| Nirk | 1 |
| Nisametdinov | 2 |
| Niso | 1 |
| Nisso | 24 |
| Nisu | 14 |
| Njemjazov | 6 |
| Nobermann | 2 |
| Nolk | 1 |
| Noobel | 15 |
| Noormets | 4 |
| Noormägi | 4 |
| Nopasson | 6 |
| Nopel | 25 |
| Norbek | 2 |
| Normus | 3 |
| Nort | 9 |
| North | 2 |
| Nossenko | 6 |
| Nugin | 130 |
| Nugis | 4 |
| Nuhja | 57 |
| Nuk | 5 |
| Nukis | 4 |
| Nukk | 17 |
| Nukka | 279 |
| Nurk | 6 |
| Nurm | 4 |
| Nurmoja | 1 |
| Nuudi | 2 |
| Nõgene | 1 |
| Nõlvak | 2 |
| Nõmm | 647 |
| Nõmme | 23 |
| Nõmmela | 5 |
| Nõmmeots | 17 |
| Nõmmik | 7 |
| Nõu | 11 |
| Näkk | 6 |
| Närep | 3 |
| Näs | 1 |
| Nööri | 2 |
| Obst | 13 |
| Odem | 1 |
| Oden | 15 |
| Odras | 3 |
| Ohaka | 2 |
| Oinas | 5 |
| Oja | 158 |
| Ojakivi | 18 |
| Ojala | 2 |
| Ojalill | 14 |
| Ojamaa | 4 |
| Ojamets | 7 |
| Ojamäe | 5 |
| Ojaperv | 1 |
| Ojaste | 10 |
| Ojok | 77 |
| Ojuk | 6 |
| Okas | 10 |
| Oksa | 47 |
| Ole | 15 |
| Olesk | 7 |
| Olev | 34 |
| Olevi | 5 |
| Olgo | 8 |
| Olla | 38 |
| Olleski | 10 |
| Ollisaar | 2 |
| Olmaru | 10 |
| Olpre | 22 |
| Olvet | 2 |
| Onnela | 2 |
| Oppi | 2 |
| Oras | 38 |
| Orav | 43 |
| Org | 1 |
| Orgla | 12 |
| Orgmets | 2 |
| Orle | 1 |
| Orlov | 4 |
| Orras | 5 |
| Orula | 10 |
| Orusalu | 4 |
| Orõsheva | 1 |
| Osila | 7 |
| Osja | 3 |
| Ossipov | 4 |
| Ostra | 150 |
| Ostrat | 12 |
| Ozols | 3 |
| Otep | 1 |
| Otepalu | 22 |
| Otisalu | 10 |
| Ots | 111 |
| Otsa | 202 |
| Otsing | 5 |
| Otson | 29 |
| Ott | 10 |
| Otter | 105 |
| Otterklau | 83 |
| Ottson | 30 |
| Ounapu | 4 |
| Oviir | 2 |