| Kaal | 1 |
| Kaarepere | 18 |
| Kaart | 1 |
| Kaasik | 96 |
| Kaaver | 4 |
| Kabal | 7 |
| Kadaja | 3 |
| Kadak | 35 |
| Kadarik | 3 |
| Kadastik | 25 |
| Kaijanen | 1 |
| Kaio | 83 |
| Kaisla | 4 |
| Kaitsa | 5 |
| Kaiu | 2 |
| Kajak | 9 |
| Kajand | 1 |
| Kala | 4 |
| Kalais | 3 |
| Kalamees | 14 |
| Kalavo | 3 |
| Kalda | 44 |
| Kaldaru | 6 |
| Kaldaäär | 2 |
| Kalde | 2 |
| Kaldeman | 2 |
| Kalder | 7 |
| Kaldma | 2 |
| Kaldmäe | 14 |
| Kaldoja | 2 |
| Kaldvee | 2 |
| Kalep | 2 |
| Kalev | 76 |
| Kalin | 2 |
| Kaljujärv | 1 |
| Kaljula | 4 |
| Kaljulaid | 4 |
| Kaljund | 26 |
| Kaljur | 2 |
| Kaljurand | 1 |
| Kaljuste | 8 |
| Kaljuvee | 6 |
| Kall | 1 |
| Kalla | 2 |
| Kallais | 2 |
| Kallas | 10 |
| Kallaste | 143 |
| Kallavus | 3 |
| Kalling | 10 |
| Kalm | 22 |
| Kalme | 101 |
| Kalmet | 1 |
| Kalmus | 30 |
| Kalso | 1 |
| Kalson | 4 |
| Kaltau | 3 |
| Kalvet | 5 |
| Kalvi | 18 |
| Kalvik | 3 |
| Kama | 13 |
| Kampus | 6 |
| Kanarbik | 6 |
| Kangaste | 1 |
| Kangilaski | 1 |
| Kangro | 200 |
| Kangur | 61 |
| Kannuluik | 2 |
| Kants | 6 |
| Kappet | 1 |
| Kapsi | 7 |
| Kardmaa | 9 |
| Karelson | 13 |
| Karendi | 4 |
| Kareta | 7 |
| Kari | 4 |
| Karimov | 3 |
| Karimsadeh | 3 |
| Karjus | 17 |
| Karlanov | 4 |
| Karlson | 7 |
| Karma | 4 |
| Karnits | 15 |
| Karo | 2 |
| Karolin | 1 |
| Karp | 4 |
| Karro | 49 |
| Karzohin | 2 |
| Kartau | 2 |
| Karteznikov | 2 |
| Karu | 42 |
| Karusaar | 3 |
| Karv | 33 |
| Karwik | 26 |
| Kasela | 9 |
| Kaselaid | 6 |
| Kasemets | 8 |
| Kasemägi | 4 |
| Kaseste | 1 |
| Kask | 347 |
| Kaskel | 1 |
| Kass | 2 |
| Katelsepp | 3 |
| Katsan | 10 |
| Katt | 196 |
| Kattel | 2 |
| Kattus | 1 |
| Kauk | 2 |
| Kaul | 3 |
| Kaupola | 3 |
| Kaur | 266 |
| Kauts | 5 |
| Keero | 4 |
| Kees | 5 |
| Keir | 2 |
| Kekkonen | 4 |
| Keks | 2 |
| Keller | 3 |
| Kelner | 1 |
| Kenk | 3 |
| Kent | 2 |
| Kepard | 3 |
| Kepler | 1 |
| Keremäe | 5 |
| Keres | 4 |
| Kerge | 42 |
| Kerk | 3 |
| Kern | 3 |
| Kerner | 7 |
| Kerro | 3 |
| Kerstna | 1 |
| Kesk | 41 |
| Keskküla | 4 |
| Keskmäe | 1 |
| Kesküla | 4 |
| Kewa | 51 |
| Kevend | 1 |
| Keverme | 5 |
| Kevvai | 8 |
| Kibbo | 2 |
| Kibena | 2 |
| Kibuspuu | 4 |
| Kiholane | 3 |
| Kihu | 2 |
| Kiibits | 2 |
| Kiidron | 4 |
| Kiigjõe | 1 |
| Kiik | 14 |
| Kiili | 178 |
| Kiipsaar | 2 |
| Kiis | 36 |
| Kiisel | 36 |
| Kiisholts | 6 |
| Kiisk | 7 |
| Kiisla | 1 |
| Kiiss | 29 |
| Kiissel | 295 |
| Kikas | 68 |
| Kikkas | 13 |
| Kikkita | 58 |
| Kilk | 4 |
| Kilter | 1 |
| Kimmeltal | 6 |
| King | 4 |
| Kingsep | 5 |
| Kingsepa | 14 |
| Kingsepp | 33 |
| Kingu | 2 |
| Kink | 11 |
| Kinks | 1 |
| Kinnunen | 3 |
| Kipper | 4 |
| Kipping | 2 |
| Kiri | 4 |
| Kirik | 36 |
| Kirikal | 15 |
| Kirn | 4 |
| Kirotar | 1 |
| Kirp | 59 |
| Kirs | 23 |
| Kirsimäe | 11 |
| Kirsimägi | 3 |
| Kirsipuu | 7 |
| Kirss | 1 |
| Kirtsi | 190 |
| Kirves | 3 |
| Kirvs | 7 |
| Kisand | 2 |
| Kisar | 2 |
| Kiseljov | 3 |
| Kisselkov | 3 |
| Kitfert | 3 |
| Kits | 7 |
| Kitse | 5 |
| Kitsnik | 8 |
| Kittask | 155 |
| Kiudma | 3 |
| Kivi | 57 |
| Kiwi | 3 |
| Kiviaid | 11 |
| Kiviaru | 3 |
| Kivila | 2 |
| Kiviloo | 7 |
| Kivimurd | 3 |
| Kivimäe | 9 |
| Kivimägi | 3 |
| Kivinen | 2 |
| Kivioja | 21 |
| Kivipalu | 5 |
| Kivisalu | 4 |
| Kivisik | 2 |
| Kivisikk | 4 |
| Kivissaar | 2 |
| Kivistik | 1 |
| Kivitare | 3 |
| Klaas | 27 |
| Klaasen | 3 |
| Klaos | 10 |
| Kleemets | 3 |
| Klein | 25 |
| Kleinbach | 3 |
| Kleinberg | 1 |
| Klemets | 1 |
| Kliiman | 10 |
| Kliimand | 7 |
| Knope | 1 |
| Kobin | 2 |
| Koch | 10 |
| Koger | 2 |
| Kohal | 12 |
| Kohava | 11 |
| Kohl | 2 |
| Koido | 83 |
| Koik | 4 |
| Koit | 2 |
| Koitla | 2 |
| Koitmaa | 2 |
| Kokk | 14 |
| Kokka | 118 |
| Kolbak | 1 |
| Kolberg | 6 |
| Kolga | 3 |
| Kolgo | 2 |
| Koll | 2 |
| Kollak | 1 |
| Kollo | 2 |
| Kolsar | 5 |
| Kommer | 3 |
| Kommusaar | 15 |
| Kompus | 10 |
| Kond | 4 |
| Kongo | 1 |
| Konsa | 73 |
| Konstantinov | 2 |
| Kont | 41 |
| Kontson | 2 |
| Kook | 400 |
| Kool | 95 |
| Kooper | 3 |
| Koor | 2 |
| Koort | 13 |
| Koosa | 6 |
| Kooskora | 3 |
| Kopp | 2 |
| Koppel | 75 |
| Kopti | 1 |
| Korbelainen | 3 |
| Korbits | 21 |
| Kord | 2 |
| Kori | 61 |
| Korjus | 1 |
| Kors | 2 |
| Kose | 13 |
| Kosemäe | 1 |
| Koshits | 7 |
| Koska | 9 |
| Koskela | 9 |
| Kosso | 62 |
| Kotin | 2 |
| Kotkas | 3 |
| Kotselainen | 5 |
| Kotter | 3 |
| Kovac | 2 |
| Kraak | 2 |
| Kraft | 4 |
| Kram | 1 |
| Krassi | 17 |
| Kreegimäe | 5 |
| Kreisberg | 16 |
| Kreos | 288 |
| Krepka | 1 |
| Krier | 2 |
| Kriis | 7 |
| Kriisa | 7 |
| Kriiska | 168 |
| Kriit | 33 |
| Kriman | 2 |
| Krimm | 69 |
| Kriska | 7 |
| Kristelson | 6 |
| Kristelstein | 2 |
| Krivodub | 1 |
| Krivoglazov | 2 |
| Kroll | 2 |
| Kronk | 52 |
| Kronkvist | 6 |
| Kross | 1 |
| Kruto | 4 |
| Krutshinin | 2 |
| Kruus | 29 |
| Kruusa | 3 |
| Kruusen | 53 |
| Kruusla | 11 |
| Kruuts | 34 |
| Krüünvald | 10 |
| Kubja | 76 |
| Kubjas | 11 |
| Kubre | 1 |
| Kuinurm | 6 |
| Kuiv | 2 |
| Kuk | 6 |
| Kukk | 123 |
| Kukke | 126 |
| Kulbas | 1 |
| Kulbin | 1 |
| Kull | 188 |
| Kulla | 1 |
| Kullamaa | 8 |
| Kullamäe | 3 |
| Kullaste | 4 |
| Kullat | 4 |
| Kulli | 3 |
| Kullus | 5 |
| Kulp | 14 |
| Kuningas | 11 |
| Kurg | 7 |
| Kurina | 1 |
| Kuristik | 7 |
| Kurm | 3 |
| Kurn | 5 |
| Kurrina | 5 |
| Kurs | 389 |
| Kurs-Tomp | 1 |
| Kurve | 1 |
| Kurwika | 22 |
| Kurvits | 8 |
| Kuslap | 128 |
| Kuslapuu | 1 |
| Kusma | 5 |
| Kusmin | 36 |
| Kustason | 6 |
| Kuzma | 1 |
| Kuznetsov | 4 |
| Kuur | 1 |
| Kuus | 9 |
| Kuusar | 2 |
| Kuusaru | 6 |
| Kuuse | 3 |
| Kuusemets | 2 |
| Kuusepuu | 3 |
| Kuusik | 441 |
| Kuusk | 19 |
| Kuusma | 3 |
| Kuusmets | 17 |
| Kuut | 7 |
| Kõiv | 20 |
| Kõiva | 5 |
| Kõivumägi | 4 |
| Kõlljalg | 3 |
| Kõlu | 12 |
| Kõnd | 5 |
| Kõps | 2 |
| Kõre | 4 |
| Kõrre | 4 |
| Kõrv | 84 |
| Kõrvas | 1 |
| Kõuhkna | 2 |
| Kõuts | 3 |
| Kägu | 4 |
| Käis | 2 |
| Käkki | 2 |
| Käosaar | 1 |
| Käpa | 8 |
| Käpp | 1 |
| Kärdma | 5 |
| Kärmas | 2 |
| Kärme | 10 |
| Kärner | 12 |
| Kärst | 1 |
| Käsi | 42 |
| Käsper | 12 |
| Kääpa | 3 |
| Käär | 45 |
| Kääri | 2 |
| Käärik | 5 |
| Käärti | 76 |
| Köbas | 5 |
| Köksi | 6 |
| Köngäs | 3 |
| Köomägi | 1 |
| Kösse | 28 |
| Köörna | 3 |
| Kübar | 40 |
| Kübarsepp | 22 |
| Kükkit | 57 |
| Külanurm | 4 |
| Külaots | 2 |
| Külm | 4 |
| Kümmel | 19 |
| Künnap | 47 |
| Kütsar | 1 |
| Kütt | 155 |