| A Trianoni béke által Magyarországtól elcsatolt települések 1920. | |||
| Settlements detached from Hungary by the Treaty of Trianon 1920 | |||
| 1001 1200 | |||
| Biharszentelek Bozsor | |||
| Legend | |||
| Village with Hungarian majority 1910 | town with Hungarian majority 1910 | city with Hungarian majority 1910 | |
| Village with Hungarian minority 1910 | town with Hungarian minority 1910 | city with Hungarian minority 1910 | |
| Village, no Hungarians 1910 | town, no Hungarians 1910 | city, no Hungarians 1910 | |
| magyar neve 1920-ban | hivatalos neve 1999 | elcsatolva 1920 | megjegyzés |
| Hungarian name 1920 | Official name 1999 | to country 1920 | |
| Biharszentelek | Sântelec | Rumania | |
| Biharszentjános | Sântion | Rumania | 1940-1944 to Hungary |
| Biharvajda | Vaida | Rumania | 1940-1944 to Hungary |
| Bikácfalva | Bicaz | Rumania | 1940-1944 to Hungary |
| Bikafalva | Tăureni | Rumania | 1940-1944 to Hungary |
| Bikalat | Făgetu Ierii | Rumania | |
| Bikás | Brezno (Bujakovo) | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Bikfalva | Bicfalău | Rumania | 1940-1944 to Hungary |
| Bikszád | Bixad | Rumania | 1940-1944 to Hungary |
| Bikszárd | Buková | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Bilak | Domneşti | Rumania | 1940-1944 to Hungary |
| Bilin | Bilin | Czechoslovakia | 1939-1944 to Hungary, 1945-1992 to Soviet Union, 1992 to Ukraine |
| Bilke | Bilki | Czechoslovakia | 1939-1944 to Hungary, 1945-1992 to Soviet Union, 1992 to Ukraine |
| Billéd | Biled | Rumania | |
| Binóc | Bíňovce | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Birda | Birda | Rumania | |
| Bírószék | Sodiinci | Yugoslavia | 1941-1944 to Hungary, 1991 to Slovenia |
| Birtin | Birtin | Rumania | |
| Biste | Byta | Czechoslovakia | 1938-1944 to Hungary, 1993 to Slovakia |
| Bisztere | Oţelu Roşu (Ohaba Bistra) | Rumania | |
| Bisztra | Bistra | Rumania | |
| Bisztracseres | Cireşa | Rumania | |
| Bisztranagyvölgy | Valea Bistrei | Rumania | |
| Bisztranyíres | Obreja | Rumania | |
| Bisztraterebes | Chiribiş | Rumania | 1940-1944 to Hungary |
| Bita | Bita | Rumania | 1940-1944 to Hungary |
| Bitérfalva | Bitarová | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Bjelipotok | Oravský Biely Potok | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Blatnica | Blatnica | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Blenkemező | Poiana Blenchii | Rumania | 1940-1944 to Hungary |
| Blezseny | Blăjeni | Rumania | |
| Bobót | Bobot | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Bobótszabadja | Bobot (Bobotská Lehota) | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Bobró | Bobrov | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Bobrovnik | Bobrovník | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Bocs | Bociu | Rumania | 1940-1944 to Hungary |
| Bocsár | Bočar | Yugoslavia | 1941-1944 to Serbia |
| Bocsárd | Hutníky (Bočiar) | Czechoslovakia | 1938-1944 to Hungary, 1993 to Slovakia |
| Bocskaihegy | Merhatovec | Yugoslavia | 1941-1944 to Hungary, 1991 to Croatia |
| Bocskó | Bocicău | Rumania | 1940-1944 to Hungary |
| Bod | Radoina (Bzince) | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Bodafalu | Liptovský Mikulá (Bodice) | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Bodófalva | Bláovce (Bodovice) | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Bodóhegy | Bodonci | Yugoslavia | 1941-1944 to Hungary, 1991 to Slovenia |
| Bodóka | Krivosúd-Bodovka | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Bodola | Budila | Rumania | 1940-1944 to Hungary |
| Bodoló | Moldava nad Bodvou (Budulov) | Czechoslovakia | 1938-1944 to Hungary, 1993 to Slovakia |
| Bodonkút | Cluj-Napoca (Vechea) | Rumania | 1940-1944 to Hungary |
| Bodonlaka | Bodovce | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Bodorfalva | Bodorová | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Bodos | Bodoş | Rumania | 1940-1944 to Hungary |
| Bodrogmező | Pol'any | Czechoslovakia | 1938-1944 to Hungary, 1993 to Slovakia |
| Bodrogszentes | Svätue | Czechoslovakia | 1938-1944 to Hungary, 1993 to Slovakia |
| Bodrogszentmária | Svätá Mária | Czechoslovakia | 1938-1944 to Hungary, 1993 to Slovakia |
| Bodrogszerdahely | Streda nad Bodrogom | Czechoslovakia | 1938-1944 to Hungary, 1993 to Slovakia |
| Bodrogszög | Streda
nad Bodrogom (Klin
nad Bodrogom) |
Czechoslovakia | 1938-1944 to Hungary, 1993 to Slovakia |
| Bodrogvécs | Somotor (Véč) | Czechoslovakia | 1938-1944 to Hungary, 1993 to Slovakia |
| Bódvavendégi | Nová Bodva (Host'ovce) | Czechoslovakia | 1938-1944 to Hungary, 1993 to Slovakia |
| Bodzás | Bany | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Bodzásújlak | Novosad | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Boérfalva | Boiereni | Rumania | 1940-1944 to Hungary |
| Bogárfalva | Bulgăreni | Rumania | 1940-1944 to Hungary |
| Bogáros | Bulgăruş | Rumania | |
| Bogártelke | Băgara | Rumania | 1940-1944 to Hungary |
| Bogdánd | Bogdand | Rumania | 1940-1944 to Hungary |
| Bogdánháza | Stârciu | Rumania | 1940-1944 to Hungary |
| Bogdány | Bohdanovce nad Trnavou | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Boglárka | Bogliarka | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Bogoltény | Bogâltin | Rumania | |
| Bogorfalva | Bogodinţ | Rumania | |
| Bogoszló | Trenčianske Bohuslavice | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Bogy | Ucuriş (Bodiu) | Rumania | |
| Bogya | Bodza | Czechoslovakia | 1938-1944 to Hungary, 1993 to Slovakia |
| Bogyafalva | Bodeşti | Rumania | |
| Bogyán | Bođani | Yugoslavia | 1941-1944 to Hungary |
| Bogyós | Prečín (Bodiná) | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Boholc | Boholţ | Rumania | |
| Boica | Băiţa | Rumania | |
| Boica | Boiţa | Rumania | |
| Boj | Boiu | Rumania | |
| Bojabirz | Boia Bârzii | Rumania | |
| Boján | Cizer (Boianu Crasnei) | Rumania | 1940-1944 to Hungary |
| Bojca | Boiţa | Rumania | |
| Bojtorjános | Scăiuş | Rumania | |
| Bóka | Boka | Yugoslavia | 1941-1944 to Serbia |
| Bokajalfalu | Băcăinţi | Rumania | |
| Bokajfelfalu | Ceru-Băcăinţi | Rumania | |
| Boklya | Bochia | Rumania | |
| Bokorvány | Bucuroaia | Rumania | |
| Bokos | Bucoşniţa | Rumania | |
| Bokrács | Bokrači | Yugoslavia | 1941-1944 to Hungary, 1991 to Slovenia |
| Boksa | Stropkov (Boka) | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Boksánbánya | Bocşa | Rumania | |
| Bokszeg | Bocsig | Rumania | |
| Boldogasszony | Frauenkirchen | Austria | 1938-1944 to Germany |
| Boldogasszonyfalva | Gospođinci | Yugoslavia | 1941-1944 to Hungary |
| Boldogfalva | Sântămărie | Rumania | |
| Boldogváros | Seliştat | Rumania | |
| Boldor | Boldur | Rumania | |
| Bolesó | Boleov | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Bolgárcserged | Cergău Mic | Rumania | |
| Bolgárom | Bulhary | Czechoslovakia | 1938-1944 to Hungary, 1993 to Slovakia |
| Bolgártelep | Colonia Bulgară | Rumania | |
| Bolkács | Bălcaciu | Rumania | |
| Bolmány | Bolman | Yugoslavia | 1941-1944 to Hungary, 1991 to Croatia |
| Bolvás | Bolvaşniţa | Rumania | |
| Bolvásvölgy | Valea Bolvaşniţa | Rumania | |
| Boly | Bol' | Czechoslovakia | 1938-1944 to Hungary, 1993 to Slovakia |
| Bólya | Buia | Rumania | |
| Bolyár | Boliarov | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Bolyk | Bol'kovce | Czechoslovakia | 1938-1944 to Hungary, 1993 to Slovakia |
| Boncafalva | Bonţeşti | Rumania | |
| Bonchida | Bonţida | Rumania | 1940-1944 to Hungary |
| Boncnyíres | Bonţ | Rumania | 1940-1944 to Hungary |
| Bondoraszó | Budureasa | Rumania | |
| Bongárd | Bungard | Rumania | |
| Bónisfalva | Neuhaus am Klausenbach (Bonisdorf) | Austria | 1938-1944 to Germany |
| Bontesd | Bunteşti | Rumania | |
| Bonyha | Bahnea | Rumania | |
| Borbánd | Bărăbanţ | Rumania | |
| Borbátvíz | Râu Bărbat | Rumania | |
| Borbolya | Mattersburg (Walbersdorf) | Austria | 1938-1944 to Germany |
| Borcfalu | Borcová | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Borcsa | Beograd (Borča) | Yugoslavia | 1941-1944 to Serbia |
| Borcsány | Rybany (Borčany) | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Borcsic | Boleov (Borčice) | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Bord | Bord | Rumania | |
| Borda | Burda | Rumania | |
| Bordos | Bordoşiu | Rumania | 1940-1944 to Hungary |
| Borgóbeszterce | Bistriţa Bârgăului | Rumania | 1940-1944 to Hungary |
| Borgóprund | Prundu Bârgăului | Rumania | 1940-1944 to Hungary |
| Borgótiha | Tiha Bârgăului | Rumania | 1940-1944 to Hungary |
| Borhalom | Boboviče | Czechoslovakia | 1939-1944 to Hungary, 1945-1992 to Soviet Union, 1992 to Ukraine |
| Borháza | Boreča | Yugoslavia | 1941-1944 to Hungary, 1991 to Slovenia |
| Borhegy | Wiesfleck (Weinberg im Burgenland) | Austria | 1938-1944 to Germany |
| Borhida | Borejci | Yugoslavia | 1941-1944 to Hungary, 1991 to Slovenia |
| Bori | Bory | Czechoslovakia | 1938-1944 to Hungary, 1993 to Slovakia |
| Borisfalva | Grosswarasdorf (Kleinwarasdorf) | Austria | 1938-1944 to Germany |
| Borkút | Borcut | Rumania | 1940-1944 to Hungary |
| Borló | Borlova | Rumania | |
| Boró | Medzilaborce (Borov) | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Boróc | Obrovac | Yugoslavia | 1941-1944 to Hungary |
| Boród | Brid | Czechoslovakia | 1939-1944 to Hungary, 1945-1992 to Soviet Union, 1992 to Ukraine |
| Borodnó | Brodno | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Borókás | Jedlinka | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Boronamező | Hurez (Poniţa) | Rumania | 1940-1944 to Hungary |
| Boronás | Brvnite | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Borosbenedek | Benic | Rumania | |
| Borosberend | Berindia | Rumania | |
| Borosbocsárd | Bucerdea Vinoasă | Rumania | |
| Borosd | Weingraben | Austria | 1938-1944 to Germany |
| Borosgödör | Inzenhof | Austria | 1938-1944 to Germany |
| Borosjenő | Ineu | Rumania | |
| Boroskrakkó | Cricău | Rumania | |
| Borosnya | Brusnica | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Borosrósa | Roşia | Rumania | |
| Borossebes | Sebiş | Rumania | |
| Borostelek | Borşa | Rumania | |
| Borostyán | Novi Beznovci | Yugoslavia | 1941-1944 to Hungary, 1991 to Slovenia |
| Borostyánkő | Bernstein | Austria | 1938-1944 to Germany |
| Boroszló | Brestov | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Borosznó | Brusno | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Borosznok | Brusník | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Borosztok | Zimbru (Brusturesc) | Rumania | |
| Borrév | Buru | Rumania | |
| Bors | Borş | Rumania | 1940-1944 to Hungary |
| Borsa | Borşa | Rumania | 1940-1944 to Hungary |
| Borsaújfalu | Vultureni | Rumania | 1940-1944 to Hungary |
| Borsi | Bora | Czechoslovakia | 1938-1944 to Hungary, 1993 to Slovakia |
| Borsmonostor | Mannersdorf
an der Rabnitz
(Klostermarienberg) |
Austria | 1938-1944 to Germany |
| Borsómező | Inuri | Rumania | |
| Borsós | Hrachovite | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Borszeg | Burzuc | Rumania | 1940-1944 to Hungary |
| Borszék | Borsec | Rumania | 1940-1944 to Hungary |
| Borválaszút | Crucişor | Rumania | 1940-1944 to Hungary |
| Borz | Borz | Rumania | |
| Borzás | Târnaveni (Boziaş) | Rumania | |
| Borzasfalva | Boteşti | Rumania | |
| Borzfalva | Bilasovic'a (Borsučina) | Czechoslovakia | 1939-1944 to Hungary, 1945-1992 to Soviet Union, 1992 to Ukraine |
| Bós | Boş + Groşi | Rumania | |
| Bosác | Boáca | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Bosányneprőd | Neporadza (Boianska Neporadza) | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Bosoród | Boşorod | Rumania | |
| Botfalu | Bod | Rumania | |
| Botfalva | Tarnyvci (Botfalva) | Czechoslovakia | 1938-1944 to Hungary, 1945-1992 to Soviet Union, 1992 to Ukraine |
| Botfej | Botfei | Rumania | |
| Botháza | Boteni | Rumania | 1940-1944 to Hungary |
| Bótos | Boto | Yugoslavia | 1941-1944 to Serbia |
| Bótrágy | Batrad' | Czechoslovakia | 1938-1944 to Hungary, 1945-1992 to Soviet Union, 1992 to Ukraine |
| Bottornya | Podturen | Yugoslavia | 1941-1944 to Hungary, 1991 to Croatia |
| Bottyánfalva | Botineşti | Rumania | |
| Bóz | Boz | Rumania | |
| Bózes | Bozeş | Rumania | |
| Bozók | Bzovík | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Bozókalsók | Jalovík | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Bozókszabadi | Bzovská Lehôtka | Czechoslovakia | 1939-1944 and 1993 to Slovakia |
| Bozósd | Rădeşti | Rumania | |
| Bozovics | Bozovici | Rumania | |
| Bozsaly | Bogei | Rumania | 1940-1944 to Hungary |
| Bozsor | Traian Vuia | Rumania | |