| Maalma | 1 |
| Maamets | 3 |
| Maante | 3 |
| Maapalu | 4 |
| Maarand | 6 |
| Maas | 3 |
| Maasik | 4 |
| Maasikas | 3 |
| Maasing | 34 |
| MacCelway | 1 |
| Maddi | 14 |
| Madi | 36 |
| Madissalu | 6 |
| Madisson | 5 |
| Magnus | 1 |
| Mahla | 1 |
| Mahmedov | 3 |
| Maidla | 11 |
| Maidre | 1 |
| Maikavere | 45 |
| Maitsalu | 4 |
| Makkari | 15 |
| Malm | 2 |
| Malmberg | 9 |
| Malmet | 1 |
| Malmsten | 2 |
| Malt | 2 |
| Malva | 6 |
| Mamõshev | 5 |
| Mandel | 6 |
| Mandelberg | 3 |
| Mangelson | 2 |
| Manglus | 14 |
| Mann | 20 |
| Mannov | 1 |
| Mantel | 9 |
| Mardijärv | 1 |
| Mardimäe | 7 |
| Mardioja | 5 |
| Mardisaar | 5 |
| Mardisoo | 16 |
| Mardla | 1 |
| Marend | 3 |
| Maripuu | 10 |
| Mark | 5 |
| Markus | 44 |
| Marmor | 1 |
| Marrandi | 3 |
| Martensoo | 11 |
| Martin | 10 |
| Martins | 9 |
| Martinson | 175 |
| Martis | 2 |
| Martjak | 7 |
| Martmaa | 7 |
| Martsaare | 1 |
| Martsik | 7 |
| Martõnov | 1 |
| Masa | 1 |
| Masing | 95 |
| Masur | 30 |
| Matheus | 7 |
| Matjus | 6 |
| Matsi | 26 |
| Matson | 10 |
| Matt | 6 |
| Matteus | 4 |
| Mattiisen | 5 |
| Matu | 2 |
| Mauer | 1 |
| McCrum | 3 |
| Meen | 3 |
| Mehlmann | 13 |
| Mei | 1 |
| Meidla | 1 |
| Meil | 2 |
| Meister | 3 |
| Mello | 13 |
| Melnikov | 3 |
| Melnikov-Mänd | 1 |
| Melnitshuk | 1 |
| Melton | 6 |
| Menind | 3 |
| Meos | 2 |
| Merikan | 2 |
| Merilo | 1 |
| Merisalu | 3 |
| Merjel | 3 |
| Mero | 11 |
| Mertz | 4 |
| Mesipuu | 119 |
| Messo | 53 |
| Mets | 41 |
| Metsa | 39 |
| Metsamaa | 4 |
| Metsaäär | 16 |
| Metskivi | 31 |
| Metsma | 22 |
| Metsoja | 6 |
| Metssaar | 2 |
| Metssalu | 2 |
| Mett | 3 |
| Meus | 3 |
| Meybaum | 5 |
| Michelson | 4 |
| Midenbritt | 7 |
| Midri | 1 |
| Mihelson | 1 |
| Mihkels | 72 |
| Mihkelsaar | 6 |
| Mihkelson | 60 |
| Mihkelsoo | 11 |
| Miil | 5 |
| Miilmaa | 2 |
| Miisna | 109 |
| Mikkov | 2 |
| Miks | 15 |
| Miller | 7 |
| Miländer | 1 |
| Mirma | 2 |
| Mitt | 1 |
| Mogom | 120 |
| Mohn | 2 |
| Mokkov | 6 |
| Moks | 7 |
| Moloka | 2 |
| Moor | 122 |
| Moora | 15 |
| Moori | 6 |
| Mooses | 1 |
| Moses | 1 |
| Mossov | 2 |
| Muda | 6 |
| Muld | 12 |
| Muna | 11 |
| Murd | 4 |
| Murd-Murulauk | 1 |
| Murel | 9 |
| Murs | 2 |
| Mursa | 21 |
| Murshak | 2 |
| Muru | 3 |
| Murulauk | 2 |
| Murumets | 3 |
| Murutalu | 11 |
| Must | 121 |
| Mustin | 1 |
| Mustonen | 6 |
| Mustsaar | 10 |
| Mutik | 1 |
| Mutli | 4 |
| Mutra | 146 |
| Muts | 10 |
| Mutso | 6 |
| Mutti | 16 |
| Muttik | 4 |
| Muuga | 13 |
| Muutra | 4 |
| Mõisa | 38 |
| Mõisamaa | 1 |
| Mõru | 9 |
| Mõtsnik | 1 |
| Mõtte | 3 |
| Mõttus | 8 |
| Mäe | 40 |
| Mäekivi | 1 |
| Mäeots | 8 |
| Mäerand | 1 |
| Mäesalu | 5 |
| Mäetaga | 4 |
| Mäetaga-Filimo | 1 |
| Mäger | 2 |
| Mägi | 417 |
| Mägismaa | 10 |
| Mägiste | 4 |
| Mähar | 1 |
| Mäi | 1 |
| Mäll | 31 |
| Mällo | 20 |
| Mänd | 18 |
| Mängli | 6 |
| Männasalu | 2 |
| Männi | 31 |
| Männik | 6 |
| Männilo | 2 |
| Männisalu | 6 |
| Männiste | 9 |
| Männistu | 2 |
| Männo | 4 |
| Mäoma | 10 |
| Märk | 5 |
| Märks | 2 |
| Märtin | 41 |
| Märtins | 11 |
| Märtinson | 16 |
| Märtsin | 6 |
| Mässo | 30 |
| Mätik | 2 |
| Mölder | 92 |
| Möller | 6 |
| Mühlbach | 1 |
| Müller | 5 |
| Mündel | 2 |
| Mürk | 3 |
| Mürrista | 30 |
| Müür | 17 |
| Müürsep | 7 |
| Müürsepp | 143 |
| Myllyoja | 3 |