| Raab | H Györ | ||
| Radmannsdorf | SLO Radovljica | ||
| Radschütz | PL Radoszyce | ||
| Radzionka | PL Radzionkow | ||
| Ragnit | RUS Neman | ||
| Raigern | CZ Rajhrad | ||
| Rainwiese | CZ Mezni Louka | ||
| Rainwiese | CZ Mezni Louka | ||
| Rakischki | LT Rokiskis | ||
| Rakonitz | CZ Rakovnik | ||
| Randnitz | CZ Rudnice nad Labem | ||
| Rann | HR Brezice | ||
| Rastenburg | PL Ketrzyn | ||
| Ratibor | PL Raciborz | ||
| Ratschach | SLO Radece | ||
| Rauschen | RUS Svetlogorsk | ||
| Rehberg | CZ Srni | ||
| Reichenau | PL Bogatynia | ||
| Reichenau | CZ Rychnov nad Nisou | ||
| Reichenberg | CZ Liberec | ||
| Reichenweiher | F Riquewihr | ||
| Reichers | CZ Rajcherov | ||
| Reichertswalde | PL Markowo | ||
| Reichfelde | PL Zlotowo | ||
| Reichstadt | CZ Zakupy | ||
| Reifnig | SLO Ribnica | ||
| Reifnitz | YU Ribnica | ||
| Reigersfeld | PL Bierawa | ||
| Reisewitz | PL Rysiewice | ||
| Reppen | PL Rzepin | ||
| Reval | EE Reval | RUS Tallinn | |
| Riegersdorf | CZ Modrec | ||
| Rippin | PL Rypin | ||
| Robe | PL Roby | ||
| Rochlitz an der Iser | CZ Rokytnice nad Jizerou | ||
| Roderbeck | PL Rynica | ||
| Rokittnitz>Martinau | PL | ||
| Rokytzan | CZ Rokycany | ||
| Ronnau | PL Trzcienice | ||
| Rokitnitz | CZ Rokytnice | ||
| Rosenau (Zips) | SK Roznava | H Rozsnyo | |
| Rosenberg | PL Olesno | ||
| Rosenberg | PL Rozyny | ||
| Rosenberg Westpreußen | PL Susz | ||
| Rossingen | LT Raseniai | ||
| Rossitz | CZ Rosice | ||
| Rothau | CZ Rotava | ||
| Rothenbach | PL Gorce | ||
| Rotisch Sauerbrunn | CZ Rogaska Slatina | ||
| Roß | LT Rusne | ||
| Roßbach | CZ Hranice | ||
| Rudolfsgnad | YU Knicanin | ||
| Rudolfswert | YU Novo Mesto | ||
| Rudolfswerth | CZ Novo Mesto | ||
| Ruhenthal | LV Rundale | ||
| Ruhfeld bei Gnesen | PL Rakowo | ||
| Rumburg | CZ Rumburk | ||
| Rummelsburg | PL Miastko | ||
| Rügenwalde | PL Darlowo | ||
| Röhrsdorf | PL Osowa Sien | ||
| Röhrsdorf | CZ Svor | ||
| Römerbad | SLO Rimske Toplice | ||
| Römerstadt | CZ Rymarov | ||
| Rössel | PL Reszel | ||
| Rötzenhagen | PL Boleszewo | ||
| Rößel | PL Reszel |