Surname Location Reference Project - C to F
| Surname | Slovakia Location | County | Submitter | State or Province | Reference Number |
|---|---|---|---|---|---|
| CACKA | Horne Oresany | Bratislava | Cacka | NJ | 0393 |
| CACURAK | Trencin | Trencin | Cacurak | PA | 0740 |
| CAGALA | Castkovce | Nitra | Waack | WI | 1430 |
| CAGALA | Turzovka | Trencin | Embrich | AZ | 0303 |
| CAJKA | Podhradik | Saris | Cajka | OH | SA-123 |
| CALVIN | Slanska Huta | Abov | Glovnas | OH | 0371A |
| CAP | Petrovce nad Laborcom | Zemplin | Zayac | OH | 0838 |
| CAPAK | Dolna Suca | Trencin | Karasek | IL | 0312 |
| CAPKO | Giraltovce | Saris | Cherveny | IL | SA-135 |
| CAPKO | Zavadka nad Hronom | Gemer | Grnak | ONT | 0080 |
| CAPOS | Katlovce | Bratislava | Chinoransky | VA | BP-065A |
| CAPULAK | Dlha nad Oravou | Orava | Capulak | ONT | 0292 |
| CAVARA | Boleraz | Bratislava | Baird | CA | 1392 |
| CECH | Kosice | Abov | Kristovensky | PA | 0283A |
| CECH | Pezinok | Bratislava | Cech | IL | BP-090 |
| CECH | Vitaz | Saris | Parsnick | NY | 1486A |
| CECH | Vitaz | Saris | Check | MN | SA-056 |
| CEHULA | Zavadka | Spis | PA | 1700E | |
| CEKLOSKY | Michalovce | Zemplin | Ceklosky | PA | 0069 |
| CELICH | Zborov | Saris | Pitleck | MN | 1292 |
| CENTEK | Pusovce | Saris | Centko | VA | SA-219 |
| CENTKO | Chmelov | Saris | Centko | VA | SA-219A |
| CENTKO | Sarisska Trstena | Saris | Centko | IL | 0306 |
| CEPLICKY | Sena | Abov | Ivanec | OH | 0979B |
| CEREMUGA | Odorin | Spis | Koren | OH | 0172 |
| CERMAK | Holic | Nitra | Kadlecik | NY | 0894A |
| CERMAK | Male Levare | Bratislava | Cermak | PA | 1278 |
| CERULA | Svidnicka | Saris | Cerula | QUE | 0395 |
| CERVEN | Chlebnice | Orava | Creagan | MI | 1161 |
| CERVENKA | Borsky Svaty Jur | Bratislava | Luecke | NY | BP-031 |
| CHABORA / CZBARA | Vysny Orlik | Saris | Barr | NJ | SA-223 |
| CHALKO | Brezova pod Bradlom | Nitra | Keithly | MI | NI-050 |
| CHARNEY | Solotvina | Uz | Kauffman | PA | 0121 |
| CHERNISKY | Hrabusice | Spis | Chernisky | VA | 0858 |
| CHERVENAK | Petrova | Saris | Hudak | MI | 1645 |
| CHESNOK | Raslavice | Saris | Pedersen | NY | SA-213A |
| CHIMIC | Kolbasov | Zemplin | Hockran | OH | 1447A |
| CHINORANSKY | Spacince | Bratislava | Chinoransky | VA | BP-065 |
| CHISMAR | Spisske Bystre | Spis | Dubelko | OH | 1632A |
| CHISMAR | Zbudza | Zemplin | George | OH | 0148A |
| CHLAUPEK | Stara Bystrica | Trencin | Horvath | NJ | 1640 |
| CHLBA | Hradiste | Nitra | Morihlatko | PA | NI-001A |
| CHMEL | Nedeca | Spis | Hmel, Sr. | PA | 1494 |
| CHMELAR | Sered | Bratislava | Chmelar | MI | BP-068 |
| CHMELIA | Lab | Bratislava | Nangle | NY | 1236A |
| CHMURA | Spisske Bystre | Spis | Smith | BC | 0758A |
| CHOCHRUN | Kolbasov | Zemplin | Hockran | OH | 1447 |
| CHODOROV | Ohradzany | Zemplin | Hodor | OH | 1133 |
| CHOLTKO | Poproc | Abov | Kasmann | MO | 1518E |
| CHOMA | Fulianka | Saris | Fabula | CA | 0572A |
| CHOMA / HOMA | Livovska Huta | Saris | Rolik | OH | SA-092C |
| CHOMISTEK | Bobrov | Orava | McCallus | PA | 1625A |
| CHONKA | Tovarne | Zemplin | Repko | PA | 0575 |
| CHONKO | Brestov | Saris | Amidon | CT | 0424 |
| CHONKO | Pavlovce nad Uhom | Uz | UZ-024 | ||
| CHOVANCAK / KAHANIK | Dlha nad Oravou | Orava | Chovancak | ONT | 0185 |
| CHOVANEC | Bardejov | Saris | Boylan | OH | 0684 |
| CHOVANEC | Zubrohlava | Orava | Lazar | IL | 0599 |
| CHRAPA | Jur pri Bratislave | Bratislava | Chrappa | NJ | 1317 |
| CHROMOHO | Krajna Polana | Saris | Custer | PA | SA-063 |
| CHROMULAK | Vysny Hrusov | Zemplin | Hromulak | OH | 1253 |
| CHRTJANSKY | Klenovec | Gemer | Hrtyanski | PA | 1211A |
| CHUHA | Kendice | Saris | Satava | OH | 1545 |
| CHURILLA | Spis | Forgac OSB | OH | 0902A | |
| CHURPACOVICH | Sobrance | Uz | Smychynsky | MI | UZ-002A |
| CIBIK | Trebatice | Nitra | Wagner | ONT | 0923 |
| CIBRIN | Hradiste | Nitra | Morihlatko | PA | NI-001 |
| CIBULA | Domanovce | Spis | Broadbeck | MD | SP-016A |
| CIBULA | Jasenie | Zvolen | Cibula | FL | 0268 |
| CIBULA | Kralovce | Abov | Getting | PA | 0847 |
| CIBULAS | Pakostov | Zemplin | Maguschak | VA | 1136A |
| CIBULKA | Spisske Podhradie | Spis | Mitchell | MD | SP-061 |
| CICON | Lipovce / Sindliar | Saris | Biros | PA | SA-176A |
| CICON | Sindliar | Saris | Biros | PA | 0510A |
| CICON | Saris | Vizdos | OH | SA-156 | |
| CIERNY | Trencianska Tepla | Trencin | Cierny | ONT | 0986 |
| CIGANEK | Borsky Mikulas | Bratislava | Bilka | MI | BP-067 |
| CINGEL | Straza | Trencin | Ulaszewski | OH | 1551A |
| CINTULA | Borsky Mikulas | Bratislava | Gilroy | NJ | BP-003 |
| CINTULA | Sajdikove Humence | Bratislava | Cintula | NY | BP-013 |
| CIPAR | Trencin | Trencin | Vondriska | OH | 0680 |
| CIPRICH | Dolny Vadicov | Trencin | Jedrisak | OH | 0511A |
| CIRNER | Myslava | Abov | Janosik | WI | 0007 |
| CISAR | Kosolna | Bratislava | Yezovit | KY | BP-028 |
| CMAR | Dapalovce | Zemplin | Cmar | PA | 1532 |
| CMAR | Nova Kelca | Zemplin | Mayernik | PA | 0299A |
| COBEJ | Stropko | Zemplin | Choby | PA | 1365 |
| COKOTA | Pakostov | Zemplin | Metil | PA | 0414 |
| CRAVEC | Saris | Kravets | FL | SA-112 | |
| CSAJKO | Nizny Orlik | Saris | Kurian | PA | 1424 |
| CSAKY | Hanusovce nad Toplou | Saris | Ftacek | IL | SA-067 |
| CSEGINY | Beloveza | Saris | Shagen | NJ | SA-103 |
| CSEREP | Zipov | Zemplin | Badnarik | IN | 1351A |
| CSERNOCH | Klastor pod Znievom | Turiec | Cernoch | OH | 0989 |
| CSERVENYAK | Arok | Uz | Chervenick | AZ | UZ-013A |
| CUBA | Kamenica | Saris | Chuba | PA | 0193 |
| CULEN | Brodske | Nitra | Culen | IL | NI-052 |
| CUNDRA | Lenartov | Saris | Dedula | OH | 0931 |
| CUPER | Vagrinec | Saris | Brenish | NJ | 0868A |
| CUPKA | Velka Lesna | Spis | Hannan | MD | 0583 |
| CURILA | Bela nad Cirochou | Zemplin | Novak | OH | 0818 |
| CURKA | Studienka | Bratislava | Hornacek | MI | BP-071 |
| CURNY | Hrabusice | Spis | Dichak | PA | 0726A |
| CVANCIGER | Sarisska Jastrabie | Saris | OH | 1656 | |
| CVENGROS | Markusovce | Spis | Cvengros | WI | 0056 |
| CVENGROS | Rudnany | Spis | Divin | CA | 0298A |
| CVERCKO | Moravany | Zemplin | Obsitnik | CT | 0536 |
| CZAPJAK | Chyzne | Orava | Capiak | CA | 0899 |
| CZAPKO | Konska | Trencin | Chapko | WI | 1417 |
| CZINGER | Sintava | Nitra | Farrell | CA | 1369A |
| DANCIK | Liptovsky Mikulas | Liptov | NY | 1695A | |
| DANCISIN | Lada | Saris | Ginovsky | MD | SA-194A |
| DANDAR | Zemplinske Hradiste | Zemplin | OH | ZE-006 | |
| DANIC | Obeckov | Novohrad | Danic | ONT | 1557 |
| DANIELOVITS | Rudlov | Zemplin | Lund | WA | 0958 |
| DANIS | Piestany | Nitra | Janis | OH | NI-068A |
| DANIS | Radosina | Nitra | Nimohay | KY | NI-059 |
| DANKO | Brekov | Zemplin | Hodor | OH | 1133A |
| DANKO | Giraltovce | Saris | Polak | ONT | 1113 |
| DANKO | Giraltovce | Saris | Danko | FL | SA-022 |
| DANKO | Kapusany | Saris | Hallgren | MN | 1293A |
| DANKO | Koprivnica | Saris | Marshall | IN | 1536 |
| DANKO | Kozsov | Uz | Johnson | OH | UZ-022 |
| DANKO | Olsavka | Saris | Lilak | OH | 1445 |
| DANKOCIK | Kusin | Uz | Wadzita | IL | UZ-008 |
| DANUI | Kamenica nad Cirochou | Zemplin | Mizak | OH | 1476C |
| DANYKO | Snakov | Saris | Holovka | MI | 1572 |
| DATEL | Ruzomberok | Liptov | Daytel | MA | 0637 |
| DEHYL | Ludrova | Liptov | Thomas | OH | 0162 |
| DEKAN | Bratislava | Bratislava | Janega | CT | BP-056 |
| DEMCAK | Zamutov | Zemplin | Kimmey | IL | 0751 |
| DEMCHAK | Parchovany | Zemplin | Dobransky | ME | 0625B |
| DEMEK | Lipany | Saris | Zabrecky, Jr | .IN | SA-118B |
| DEMIAN | Tisovec | Gemer | Vojir | OH | 1188 |
| DEMKO | Vysoka nad Uhom | Uz | Vasiloff | OH | 1436A |
| DEMKOVICH | Zborov | Saris | Lesczynski | IL | 0714 |
| DEMOVIC | Bohdanovce nad Trnavou | Bratislava | Behun | PA | 0542 |
| DEMSCAK | Male Ozorovce | Zemplin | Blasko | MD | 0906 |
| DEMSKO | Bardejov | Saris | Spirko | OH | SA-034 |
| DEMYAN | Kolbasov | Zemplin | Kozak | NY | 0409 |
| DEMYANOVICH | Trebisov | Zemplin | Luca | OH | 0440 |
| DERCALIK | Kuklov | Bratislava | Karovic | NY | 0806 |
| DERMA | Stara Ves | Spis | Grutka | IN | 0963A |
| DETKO | Zavada | Nitra | Kuzio | NJ | 1399 |
| DEVECKA | Jamnik | Liptov | Britz | OH | 1439 |
| DIABELKO | Kravany | Spis | Dubelko | OH | 1632 |
| DICAK | Hrabusice | Spis | Dichak | PA | 0726 |
| DILIK | Vranov nad Toplou | Zemplin | Bobrowski | PA | 0987 |
| DINGA | Myjava | Nitra | Dinga | NY | NI-078 |
| DIRBASZ | Hrabovcik | Saris | Derbas | CA | 1379 |
| DISKANT | Kosice Hamre | Abov | Sabol | OH | 1517 |
| DISKO | Poniky | Zvolen | Phillips | OH | 0215 |
| DJACOVSKI | Pecovska Nova Ves | Saris | Galestok | NY | 0783A |
| DLHOS | Bratislava | Bratislava | Bychak | CA | BP-088 |
| DLUGI | Nova Bela | Spis | Farcosky | PA | 1539A |
| DLUGOS | Krivany | Saris | Evanko | CT | 0179 |
| DLUGOS | Krivany | Saris | Gelofcsak | OH | 1619 |
| DLUGOSH | Mnisek nad Popradom | Spis | Aldrich | OR | 1499A |
| DOBRANSKY | Secovska Polianka | Zemplin | Dobransky | ME | 0625 |
| DOBROVICH | Krivany | Saris | Dobrovich | AR | 0149 |
| DOHAN | Kusin | Uz | Campbell | PA | 0104 |
| DOHNALEK | Myjava | Nitra | Halko | NY | 0607 |
| DOLAK | Smilno | Saris | Kravets | FL | SA-112A |
| DOLINIC | Remetske Hamre | Uz | Krul | PA | 0895A |
| DOLNY | Dubrava | Spis | Rabatin | AZ | SP-068B |
| DOMCEK | Nedanovce | Nitra | Balaz | ONT | NI-045A |
| DONC | Jaklovce | Spis | Donch | CA | 0041 |
| DONC | Zvolen | Donch | CA | 0040 | |
| DONO | Kunova Teplica | Gemer | Katona | OH | 1443 |
| DORKO | Bzenov | Saris | Fifik | SQ | SA-058A |
| DORKO | Margecany | Spis | Dorko | OH | 0235 |
| DOROTZAK | Spisske Vlachy | Spis | Sventech | OH | 1467B |
| DORUSCAK | Richvald | Saris | Hudak | OR | SA-059A |
| DRABIK | Cerveny Kamen | Trencin | Mihalek, Sr. | WI | 1078 |
| DRABIK | Pozdisovce | Zemplin | Falda | IN | 0681 |
| DRAGOS | Kravany | Spis | Dragos | NY | 0711 |
| DRAHNAK | Trencin | Drahnak | MI | 1362 | |
| DRAHOVSKY | Madunice | Nitra | Drahovsky | PA | 1264 |
| DRAPP | Zavadka | Spis | Pohmurski | OH | 1196B |
| DRDAK | Lysa pod Makytou | Trencin | Mihalek, Sr | WI | 1012 |
| DRENGUBA | Slanska Huta | Abov | Drangula | NJ | 1535 |
| DRENKO | Kunova Teplica | Gemer | Katona | OH | 1443A |
| DRENKO | Nova Sedlica | Zemplin | Mihalek, Sr | WI | 1095 |
| DREVICKY | Dlhe nad Cirochou | Zemplin | Terbrack | OH | 0936 |
| DRIMAK | Nova Polianka | Saris | Gardiner | WI | 1573 |
| DUACINSKY | Kamienka | Spis | Force | OH | SP-014A |
| DUBOVEC | Jezernica | Turiec | Tomcany | OH | 1507A |
| DUBRAVA | Gbely | Nitra | Mihal | NY | 0368 |
| DUBRAVSKY | Vysne Ruzbachy | Spis | Motuzick | CT | SP-047A |
| DUBROSKY | Spisska Nova Ves | Spis | Dubrosky | FL | SP-080 |
| DUCH | Plavec | Saris | Mihalek, Sr | .WI | 1071 |
| DUCH | Plavec | Saris | Johnson | PA | SA-170 |
| DUCH | Spisske Podhradie | Spis | Plachko | OH | 1634A |
| DUDAK | Lenartov | Saris | Kupchella | PA | SA-039A |
| DUDAS | Kristy | Uz | Resan | VA | 1519B |
| DUDIK | Pozdisovce | Zemplin | Dudik | OH | 1166 |
| DUMBIER | Skrabske | Zemplin | Gyomber | PA | 0181 |
| DUNCA | Stare | Zemplin | Strunak | NJ | 0509 |
| DUNDA | Stara Bystrica | Trencin | Kukucka | PA | 1301 |
| DUPAJ | Duplin | Saris | Grospitch | OH | 0464 |
| DUPILKA | Trnava | Bratislava | Vizdos | OH | BP-060 |
| DURA | Vladica | Zemplin | Dura | NY | 1595 |
| DURAJ | Krasna Horka | Orava | Kulich | OH | 0502 |
| DUREJ | Muranska Dlha Luka | Gemer | FL | 1717A | |
| DURDAN | Giraltovce | Saris | Durdan | IL | SA-069 |
| DURDIK | Sahy | Hont | Durdik | OH | 1250 |
| DURICA | Brezovica | Saris | Bokmiller | OH | 0877 |
| DURICA | Porac | Spis | Fuller | CO | 0485A |
| DURICA | Porac | Spis | Pohmurski | OH | 1196 |
| DURISEK | Podkylava | Nitra | Tarby | NJ | NI-032 |
| DURISIN | Trebisov | Zemplin | MI | ZE-007 | |
| DURNAK | Kosice | Abov | Straker | IN | 1367 |
| DUTKO | Teplicka | Spis | Dutko | OH | 1267 |
| DVORACKY | Hazlin | Saris | Kunas | IN | SA-053A |
| DVORNICKI | Nova Bela | Spis | Dvornicky | NY | 0336A |
| DVORSCAK | Cervenica pri Sabinove | Saris | Dvorscak | IL | 0087 |
| DVORSKY | Liskova | Liptov | Muka | MA | 1582B |
| DZAMBIK | Lenartov | Saris | Hudak | OR | SA-059C |
| DZATKO | Lieskovce | Zemplin | Dzatko | ONT | 0770 |
| DZATKO | Vechec | Zemplin | Dzatko | OH | 0372 |
| DZIAK | Kolackov | Spis | MD | 1663A | |
| DZIDO | Snina | Zemplin | Smith | NJ | 1448 |
| DZIERNAK | Slovenska Ves | Spis | Mahefkey | NY | 0990A |
| DZSUBAK | Nizny Zipov | Zemplin | Mayernik | PA | 1243 |
| DZUBAK | Pticie | Zemplin | Juback | PA | 0804 |
| DZUGAN | Zbince | Zemplin | Dzugan | MN | 1409 |
| DZUGAN | Dugan | PA | 1473 | ||
| DZUNDA | Malcov | Saris | Jewell | OH | SA-101B |
| DZURENDA | Zakarovce | Spis | Dzurenda | PA | SP-048A |
| DZURIAK | Vavrisovo | Liptov | Clark | OR | 1355 |
| DZURIK | Dubrava | Spis | Gelofcsak | OH | 1618 |
| DZURILLA | Klcov | Spis | Blasko | NY | 0391 |
| DZURINA | Blatne Revistia | Uz | Rima | SC | 0050 |
| DZURINKA | Blatne Revistia | Uz | Rima | SC | 0051 |
| DZURISIN | Marhan | Saris | Besserman | IL | 1458 |
| DZURKO | Babie | Saris | Matcho | NJ | 0206B |
| DZURKO | Nizne Ladickovce | Zemplin | Dzurko | PA | 0797 |
| DZVONNIK | Ruskovce | Uz | Dzvonik | PA | 1308 |
| EDELMAN | Dubinne | Saris | Wasserstrom | OH | SA-141B |
| EGRI | Huta | Uz | Terlesky | CT | 0071 |
| ELIAS | Dubravo | Liptov | Bernat | MD | 1368A |
| ELIAS | Lipany | Saris | Marzik | PA | SA-014C |
| ELIAS | Polanovce | Spis | Bernat | MD | SP-010A |
| ELIAS | Vrbovce | Nitra | Sukupa | NY | NI-004 |
| ELIJAS | Raznany | Saris | Elias | PA | SA-128 |
| ELKO | Sedlice | Saris | Murray | PA | SA-033A |
| ERDZAK | Sunava | Spis | Gasperich | NM | 0677A |
| ERM | Salgovik | Saris | Erm | MI | 1550 |
| FABER | Nitra | Faber | OH | 1200 | |
| FABIAN | Markusovce | Spis | Kutsko | OH | 1575D |
| FABIAN | Nizny Slavkov | Saris | Fabian | CT | 0025 |
| FABRY | Letanovce | Spis | Fabry | OH | 0167 |
| FABULYA | Fulianka | Saris | Fabula | CA | 0566 |
| FACKO | Kokava | Gemer | Nosal | PA | 0205B |
| FAJER | Nitrianske Rudno | Nitra | Fajer | OR | NI-022 |
| FALAT | Margecany | Spis | Kaufman | OH | 1524A |
| FALAT | Obisovce | Saris | Fallat | PA | 0319 |
| FALLAT | Lutina | Saris | Gaydosh | CT | 1291 |
| FANDEL | Dubova | Bratislava | Hocker | MI | 1370 |
| FAPSO | Povazska Bystrica | Trencin | Kramoris | WI | 0481A |
| FARKAS | Slovenska Ves | Spis | Kozlak | CT | 0475 |
| FARSKY | Nemestovo | Orava | Opalek | MI | 1569 |
| FARSKY | Oravska Jasenica | Orava | Miklusicak | MI | 0992A |
| FEC | Kurima | Saris | Fech | MI | 1350 |
| FECENKO | Roztoky | Saris | Mardis | OH | 1465 |
| FECKO | Radatice | Saris | Pallenik | OH | 1373 |
| FECKO | Vysne Repase | Spis | Fecko | PA | 0486 |
| FECSKO | Stropkov | Zemplin | Mencel | VT | 0026A |
| FECZKO | Vysne Repase | Spis | Sabol | PA | SP-043A |
| FEDAK | Michalovce | Zemplin | Jacob | NJ | 1233A |
| FEDAK | Plavnica | Saris | Watchilla | PA | SA-086 |
| FEDOR | Demjata | Saris | Fedor | IL | 0337 |
| FEDOR | Rencisov | Saris | Buby | PA | 1116 |
| FEDOR | Sedlice | Saris | Amidon | CT | 0424A |
| FEDOR | Sedlice | Saris | Duke | NJ | 1128 |
| FEDOR | Slavkovce | Zemplin | Fedor | WA | 1238 |
| FEDOR | Slavkovce | Zemplin | NY | ZE-008 | |
| FEDOR | Saris | Elias | NY | SA-075 | |
| FEDORAK | Podsadek | Spis | Ference | FL | 0154A |
| FEDORCAK | Trebisov | Zemplin | Mihalek, Sr | .WI | 1096 |
| FENDRICH | Bratislava | Bratislava | Rich | VA | BP-061 |
| FERENC | Kosice Bela | Abov | Sabol | OH | 1516 |
| FERENC | Kysak | Saris | Getting | PA | 0848 |
| FERENC | Osikov | Saris | Ference | OH | 0002 |
| FERENCAK | Chrast nad Hornadom | Spis | Feranchak | PA | SP-003 |
| FERENCAK | Spisske Vlachy | Spis | Tokash | OH | SP-025A |
| FERENCE | Cabov | Zemplin | OH | ZE-009 | |
| FERENCE | Kosice | Abov | Ference | FL | 0154 |
| FERENCE | Sacurov | Zemplin | Hritz | OH | 0175A |
| FERKO | Zbudza | Zemplin | Ferko | PA | 1259 |
| FERTAL | Lukov | Saris | Fertal | CA | 0344 |
| FETCEK | Smilno | Saris | Check | MN | SA-056C |
| FETCHO | Ruska Nova Ves | Saris | Fifik | SQ | SA-058 |
| FETZEK | Smilno | Saris | Black | IL | SA-104 |
| FICO | Trencin | Trencin | Fico | PA | 0577 |
| FIGLAR | Osturna | Spis | Alzo | PA | SP-055 |
| FIGURA | Pecovska Nova Ves | Saris | Adams | NY | 1626A |
| FIJALKA / PROSZAK | Nizny Krucov | Zemplin | Garcia | WA | 0176 |
| FILIAC | Hloza | Trencin | OH | 0914A | |
| FILIP | Bystrany | Spis | Kopanic, Jr | .PA | 0767E |
| FILIP | Matejovce | Spis | Hurite | OH | 1380 |
| FILIP | Matejovce | Spis | Fleming | CO | SP-056B |
| FILIP | Spisska Nova Ves | Spis | Teter | NJ | 0516 |
| FINCINSKI | Sacurov | Zemplin | OH | ZE-010 | |
| FIRMENDER | Bratislava | Proctor | NJ | 1623 | |
| FIRMENT | Jakubany | Spis | Firment | MD | 0052 |
| FISCHER | Roskovce | Zemplin | Thomas | MI | 0145 |
| FISCHER | Rozkovany | Saris | Thomas | MI | SA-049 |
| FIYALKO | Licartovce | Saris | Gregorovich | OH | 0177A |
| FIYALKO | Licartovce | Saris | Gregorovich | OH | SA-066 |
| FLISEK | Martin | Turiec | Mihalek, Sr | .WI | 1053 |
| FLOREK | Radoma | Saris | Mitnik | CT | SA-011 |
| FODORA | Hradiste | Nitra | Mark | OH | 1190A |
| FORGAC | Studenec | Spis | Forgac OSB | OH | 0902 |
| FORIS | Siba | Saris | Kohuth | OH | SA-050 |
| FRANCUZ | Nova Lubovna | Spis | Konkoly | OH | 0530A |
| FRANEK | Gaboltov | Saris | Brennish | PA | SA-109B |
| FRANKO | Danisovce | Spis | Feranchak | PA | SP-003A |
| FRANKO | Harakovce | Spis | Franko | OH | 0620 |
| FRANKO | Krivany | Saris | Borkowski | CT | SA-072B |
| FRANKO | Krivany | Saris | Greasel | IN | SA-114A |
| FRANKO | Spis | Frank | CA | 1216 | |
| FRENA | Zemplin | McHugh | NY | 1621A | |
| FRICHOVSKY | Velky Folkmar | Spis | Petrik | OH | SP-062A |
| FRIDMAN | Batizovce | Spis | Freedman | VA | 1540 |
| FRIDRICH | Trstin | Bratislava | Kurinec | IL | BP-034 |
| FRIEDMAN | Markusovce | Spis | Mihalek, Sr | .WI | 1066 |
| FRTYAL | Senica | Nitra | Malchak | NY | NI-036 |
| FTACEK | Stiavnik | Trencin | Mihalek, Sr | .WI | 1013 |
| FUDALY | Lendak | Spis | Mihalek, Sr | .WI | 1093A |
| FUGA | Vinne | Uz | Fuga | ONT | 0972 |
| FURCAK | Medzany | Saris | Furchak | NJ | 0814 |
| FURCHAK | Zlata Bana | Saris | Luch, Jr | .CA | SA-095A |
| FURDAK | Banovce nad Ondavou | Zemplin | Prochko | OH | 0588 |
| FURDEK | Trstena | Orava | Beluscak | OH | 0970 |
| FURIGA | Parnica | Orava | Furiga | OH | 0870 |
| FURIN | Dobsina | Gemer | Ruckert | PA | 1309 |
| FURIN | Zavadka | Spis | ID | 1651A | |
| FURMANCHIK | Malcov | Saris | Maslar | PA | SA-122C |
| FURTO | Chlebnice | Orava | Mican | IN | 0661 |
| FUTEJ | Jakubova Vola | Saris | Futey | PA | SA-084 |
| FUZAK | Velky Cepcin | Turiec | Harris | AZ | TU-002A |