| Club Winx: El secreto del reino perdido |
 Argentina |
| Club Winx: El secreto del reino perdido |
 Mexico |
| Club Winx: El secreto del reino perdido |
 Venezuela |
| Klub Winx - Tajemnica Zaginionego Królestwa |
 Poland |
| Magija Vinks: Tajna izguljenog kraljevstva |
 Serbia |
| Winx - O Segredo do Reino Perdido |
 Portugal |
| Winx Club - Das Geheimnis des verlorenen Königreichs |
 West Germany |
| Winx club - det fortabte kongerige |
 Denmark |
| Winx Club - Hemligheternas slott |
 Sweden |
| Winx club - Salaisuuksien linna |
 Finland |
| Winx club en het geheim van het verloren rijk (dubbed version) |
 Netherlands |
| Winx Club, el secreto del reino perdido |
 Spain |
| Winx Club: El secreto del reino perdido |
Spain |
| Winx Club: Il Segreto Del Regno Perduto |
 South Africa |
| Winx Club: Il segreto del Regno Perduto |
 Ecuador |
| Winx Club: Il segreto del Regno Perduto |
 Italy |
| Winx Club: Kayıp Krallığın Sırrı |
 Turkey |
| Winx Club: Kongerikets Hemmelighet (dubbed version) |
 Norway |
| Winx Club: le secret du royaume perdu |
 France |
| Winx Club: O Segredo do Reino Perdido |
 Brazil |
| Winx Club: Tajna izgubljenog kraljevstva |
 Croatia |
| Winx Club: The Secret of the Lost Kingdom |
 United Kingdom |
| Winx Club: The Secret of the Lost Kingdom |
 USA |
| Winx Club: The Secret of the Lost Kingdom |
|
| Winx club: To mystiko tou hamenou vasileiou (transliterated title) |
 Greece |
| Winx Club: Výprava do strateného kráľovstva |
 Slovakia |
| Winx Club: Výprava do ztraceného království |
 Czechoslovakia |
| Winx Klub: Az elveszett királyság titka |
 Hungary |
| Winx Клуб: Тайна затерянного королевства |
 Russia |
| Winx: El secret del regne perdut |
Spain |
| Клуб Вінкс: Таємниця загубленого королівства |
 Ukraine |
| Уинкс клуб: Тайната на изгубеното кралство |
 Bulgaria |
| ウィンクス・クラブ: 失われた王国の秘密 |
 Japan |
