| Waag-Neustadtl | CS Nove Mesto | ||
| Waldenburg | PL Walbrcych | ||
| Walk | EE Valga | LV Valka | |
| Wallern | CZ Valory | ||
| Walpach | YU Valpovo | ||
| Walter | RUS Gretschinaja Luka | ||
| Warmbrunn | PL Cieplice | ||
| Warnsdorf | CZ Varnsdorf | ||
| Wartenberg | CZ Straz p.R. | ||
| Wehlau | PL Welawa | RUS Snamensk | |
| Wehrau | PL Osiecznica | ||
| Weiden | I Udine | ||
| Weidenau | CS Vidnava | ||
| Weigsdorf | PL Wigancice Zylanskie | ||
| Weipert | CZ Vejprty | ||
| Weißbach | CZ Bily Potok | ||
| Weißenburg | R Alba Julia | H | |
| Weißkirchen | R | H Fehertemplom | YU Bela Crkva |
| Weißstätten | CZ Pasohlavky | ||
| Welwarn | CZ Velvary | ||
| Wemend | H Vemend | ||
| Wenden | LV Cesis | ||
| Werischwar | H Pilisvörösvar | ||
| Werro | EE Vöru | ||
| Werschetz | YU Vrsac | ||
| Wiegschütz | PL Wiekszyce | ||
| Wiesenthein | I Vicenza | ||
| Wildenhagen | PL Lubin | ||
| Wildstein | CZ Skalna | ||
| Wilhelmsthal | PL Gawrzajlka | ||
| Wilkomir | LT Ukmerge | ||
| Wilna | LT Vilnius | PL Wilno | |
| Windau | LV Ventspils | ||
| Windisch Feistritz | SLO Slovensca Bistrica | ||
| Windisch Kamnitz | CZ Srbska Kamenice | ||
| Windisch Proben | CS Tot Prona | ||
| Windischgrätz | SLO Slovenji Gradec | ||
| Winterberg | CZ Vimperk | ||
| Wirschin | CZ Brezin | ||
| Wittingau | CS Trebon | ||
| Wobesde | PL Objazda | ||
| Wocheiner Feistritz | SLO Bohinj Bistrica | ||
| Wohlingen <–Boniowitz | PL Boniowice | ||
| Wohnwitz | PL Wojnowice | ||
| Wojkowitz | CZ Vojkovice | ||
| Wollstein | PL Wolsztyn | ||
| Wormditt | PL Orneta | ||
| Wossitz | PL Osice | ||
| Wostitz | CZ Vlasatice | ||
| Wudersch | H Budaörs | ||
| Wurzen | SLO Podkoren | ||
| Wutzen=Wutzow | PL Dolny Osinow | ||
| Wutzow=Wutzen | PL Dolny Osinow | ||
| Wördl | YU Otocec | ||
| Zargard | LT Zarasai | ||
| Zauditz | PL Sudice | ||
| Zehden | PL Cedynia | ||
| Zettwing | CZ Cetviny | ||
| Zichenau | PL Ciechanow | ||
| Ziegenort | PL Trzebiez | ||
| Zieningen | PL Cybinka | ||
| Zillerthal-Erdmannsdorf | PL Myslakowice | ||
| Zinten | RUS Kornewo | ||
| Zipser Neudorf | SK Spisska Nova Ves | H Iglo | |
| Zlabings | CZ Slavonice | ||
| Zlin | CZ Gottwaldov | ||
| Znaim | CZ Znojmo | ||
| Zobor an der Nitra | SK Ponitri | ||
| Zorndorf | PL Sarbinowo | ||
| Zugdamm | PL Suchy Dab | ||
| Zwickau | CZ Cvikov | ||
| Zwischenwassern | SLO Medvode | ||
| Zwittau | CZ Svitava | ||
| Zülz = Judenzülz | PL Bialski | ||
| Zäckerick | PL Siekierki |