The Heir of Isildur was a title of forty known Lords of the Dúnedain descended in right line from Isildur the son of Elendil, from his son Valandil to Aragorn Elessar, who reunited the Kingdoms of the Dúnedain in Middle-earth.
Translations around the world
| Foreign Language | Translated name |
| Afrikaans | Erfgenaam van Isildur |
| Albanian | Trashëgimtari i Isildur |
| Azerbaijani | Isildurın varisi |
| Basque | Isildurren oinordekoa |
| Bosnian | Nasljednik Isildura |
| Bulgarian Cyrillic | Наследник на Исилдур |
| Croatian | Isildurov nasljednik |
| Czech | Dědic Isilduru |
| Estonian | Isilduri pärija |
| Finnish | Isildurin perijä |
| French | Héritier d'Isildur |
| Danish | Arving af Isildur |
| Dutch | Erfgenaam van Isildur |
| Galician | Herdeiro de Isildur |
| German | Thronfolger von Isildur |
| Gujarati | ઇસ્લિડર્સ વારસદાર |
| Hindi | ईसिल्दुर का वारिस |
| Hungarian | Isildur örököse |
| Italian | Erede di Isildur |
| Kannada | ಇಸಿಲ್ಡರ ಉತ್ತರಾಧಿಕಾರಿ |
| Latvian | Isildura mantinieks |
| Lithuanian | Isildūro įpėdinis |
| Malaysian | Pewaris Isildur |
| Maltese | Werriet ta 'Isildur |
| Marathi | इस्ल्डर यांचे वारस |
| Mongolian Cyrillic | Исилдур-ийн өв залгамжлагч |
| Norwegian | Arving av Isildur |
| Portuguese | Herdeiro de Isildur |
| Romanian | Moștenitorul lui Isildur |
| Russian | Наследник Исильдура |
| Scottish Gaelic | Oighre Isildur |
| Sinhalese | ඊසිල්දුර් හි උරුමක්කාරයා |
| Serbian | Наследник Исилдура (Cyrillic) Naslednik Isildura (Latin) |
| Slovak | Dedič Isildur |
| Slovenian | Isildurjev dedič |
| Spanish | Heredero de Isildur |
| Swedish | Arvinge av Isildur |
| Telugu | ఇస్సిల్యుర్ యొక్క వారసుడు |
| Turkish | Isildur'in varisi |
| Ukrainian Cyrillic | Спадкоємець Ісилдура |