| Kaaden | CZ Kadan | ||
| Kadlub OS | PL Turawski | ||
| Käsmark | SK Kesmarok | H Kesmark | |
| Kahlau | PL Kalnik | ||
| Kaimelskrug<Schillenigken | |||
| Kainsfeld | PL Kainowe Pole | ||
| Kalau | PL Kalawa | ||
| Kalischt | CZ Kaliste | ||
| Kaltwasser | PL Zimne Wody | ||
| Kamenz | PL Kamieniez Zabkowicki | ||
| Kammin | PL Kamien Wielki | ||
| Kanth | PL Katy Wroclawskie | ||
| Kaplau | R Capleni | H Kaplony | |
| Kaplitz | CZ Kaplice | ||
| Kapsdorf | PL Czernczyce | ||
| Karbitz | CZ Chabarovice | ||
| Karf | PL Karb | ||
| Karfreit | I Carporetto | ||
| Karlsbad | CZ Karlovy Vary | ||
| Karlsbrunn | CZ Karlova Studanka | ||
| Karlsburg | R Alba Julia | ||
| Karlsdorf | CZ Karlova | ||
| Karlstadt | SLO Karlovac | ||
| Karthaus | PL Kartuzy | ||
| Kaschau | SK Kosice | H Kassa | |
| Kaschwitzfeld | CZ Kasenec | ||
| Katharinenfeld Georgien | GG Bolnisi | ||
| Katharinenstadt>Marx | |||
| Kattowitz | PL Katowice | ||
| Katzbach (Fluß) | PL Kaczawa (Fluß) | ||
| Kauffung | PL Wojcieszow | ||
| Kaunas | LT Kaunas | PL Kowno | RUS Kaunas |
| Kauth | PL Katy Wroclawske | ||
| Kerndia | HR Krndie (Slawonien) | ||
| Kirchberg O/S | PL Tlustoreby | ||
| Kirchheim | I Circhina | ||
| Kladrau | CZ Kladruby | ||
| Klaidovka | CZ Klajdovka | ||
| Klausberg<Mikultschütz | PL | ||
| Klausenburg | R Cluj - Napoca | H Koloszvar | |
| Klein Iser | CZ Jizerka | ||
| Klein Weißensee | RUS Malye Gorki | ||
| Klein-Mohrau | CZ Mala Moravka | ||
| Kleingandern | PL Debrznica | ||
| Klein Oels | PL Olesnizka | ||
| Kleinort | PL Pierslawek | ||
| Klentnitz | CZ Klentnice | ||
| Kleppel | CZ Klepacov | ||
| Klitschdorf | PL Kliszkow | ||
| Klösterle | CZ Klasterec nad Ohri | ||
| Klonowitz | PL Klonowka | ||
| Königingrätz | CZ Jindrichuv Hradec | ||
| Königsberg (Eger) | CZ Kynsperk nad Ohre | ||
| Königsberg (Neumark) | PL Chojna | ||
| Königsberg Pr. | LT Keraliaucius | PL Krolewiecz | RUS Kaliningrad |
| Königsdorf | PL Krolewo | ||
| Königsfeld | CZ Kralovo Pole | ||
| Königshain | PL Dziatosayn | ||
| Königshof | CZ Kraluv Dvur | ||
| Königshütte | PL Krolewska Huta –> Chorzow |
||
| Königssaal | CZ Zbraslov | ||
| Königswald | CZ Libouchec | ||
| Köppernig | PL Koperniki | ||
| Körlin | PL Karlino | ||
| Köslin | PL Koszalin | ||
| Kohlfurt | PL Wegliniec | ||
| Kolberg | PL Kolobrzeg | ||
| Kolmar | PL Chodziesen | ||
| Komorn | SK Komarno | ||
| Konitz | PL Chojnice | ||
| Kopreinitz | YU Koprivnica | ||
| Koschlan | CZ Kozlany | ||
| Kostel | CS Podivin | ||
| Krainburg | SLO Kranj | ||
| Krakau | PL Krakow | ||
| Kralowitz | CZ Kralovice | ||
| Krampe | PL Krepa | ||
| Kranichsfeld | SLO Race | ||
| Krappitz | PL Krapkowice | ||
| Kratzau | CZ Chrastava | ||
| Krawarn | PL Krowiarki | ||
| Kreibitz | CZ Chribska | ||
| Kremnitz | SK Kremnica | ||
| Kremsier | SK Kromeriz | ||
| Kreuz | H Körös | YU Krizevci | |
| Kreuzburg | LT Krustpils | ||
| Kreuzburg | PL Kluczbork | ||
| Kreuzofen | PL Krzyze | ||
| Kreßnitz | SLO Kresnice | ||
| Krickerhau | SK Handlova | ||
| Krieblowitz>Blüchersruh | PL Krobielowice | ||
| Kriefkohl | PL Krzywe Kolo | ||
| Krining | PL Krzynnki | ||
| Krockow | PL Krokowa | ||
| Kronau | SLO Kranjska Gora | ||
| Krone | PL Koronowo | ||
| Kronstadt | R Brasov | H Brasso | |
| Kropp | SLO Kropa | ||
| Krossen | PL Krosno | ||
| Krumau | CZ Cesky Krumlov | ||
| Krummhübel | PL Karpacz | ||
| Kruschiwl | YU Krusevlje | ||
| Krutinnen | PL Krutyn | ||
| Kuhnau | PL Kuniow | ||
| Kulm | PL Chelmno | ||
| Kulsam | CZ Odrava | ||
| Kumrowitz | CZ Komarov | ||
| Kunersdorf | PL Kunowice | ||
| Kunwald | CZ Kunvald | ||
| Kupferberg | PL Miedcianka | ||
| Kuschwarda | CZ Strazny | ||
| Kuttenberg | CZ Kutna Hora | ||
| Kykoit | PL Kykoity | ||
| Kynast | PL Chojnik |