Mai hivatalos név
| Ország | Névváltozatok
|
| Jenakijevo / Єнaкiєвo | UKR | Enakievo / Eнaкиeвo [OR -1918]; †Rikovo / Рикoвo, ~Ordžonikidze / Оpджoникидзe [OR] |
| Jenidže Vardar ld. Jannitsa | | |
| Jenitsa ld. Jannitsa | | |
| Jennersdorf | AU | Gyanafalva [MA -1918] |
| Jerapetra / Ierapetra | GR | |
| Jerichmarkt ld. Cîmpia Turzii | | |
| Jermer ld. Jaroměř | | |
| Jerzmanice Zdrój | LEN | Hermsdorf (an der Katzbach) [NM -1945] |
| Jesenice | SLN | Assling [AU -1918, NM 1941-1945] |
| Jeseník | CS | †Lázně Jeseník; †Frývaldov [1918-38]; Freiwaldau [AU -1918, NM 1938-1945] |
| Jesenské | SLK | †Feledince; Feled [MA -1918, 1938-1945] |
| Jessel ld. Jasło | | |
| Jevíčko | CS | Gewitsch [AU -1918, NM 1938-1945] |
| Jevpatorija / Євпaтopiя | UKR | †Guesleve / Гуecлeвe [OR -1945]; Evpatorija / Eвпaтopия [OR -1954] |
| Jewe ld. Jõhvi | | |
| Jewie ld. Vievis | | |
| Jezerjani ld. Eisenhüttl | | |
| Jezero / Jeзepo | BH | |
| Jezersko | SLN | Seeland [AU -1918, NM 1941-1945] |
| Jeziorosy ld. Zarasai | | |
| Jeżów | LEN | Grunau [NM -1945] |
| Jezupil' ld. Žovten' | | |
| Jezupol ld. Žovten' | | |
| Jiannitsa ld. Jannitsa | | |
| Jibou | RO | Zsibó [MA -1918, 1940-1944] |
| Jičin | CS | Jitschin [AU -1918, NM 1939-1945] |
| Jihlava | CS | Iglau [AU -1918, NM 1939-45]; Igława [len.] |
| Jilemnice | CS | Starkenbach [AU -1918, NM 1939-1945] |
| Jílové | CS | Eule [AU -1918, NM 1939-1945] |
| Jimbolia | RO | Hatzfeld [AU -1867]; Zsombolya [MA -1918]; Žombolj / Жoмбoљ [SB 1920-1921] |
