King of Hungary
| Apostolic King of Hungary | |
|---|---|
| Magyarország apostoli királya | |
| Details | |
| Style | His Apostolic Majesty |
| First monarch | Stephen I |
| Last monarch | Charles IV |
| Formation | 25 December 1000 |
| Abolition | 16 November 1918 |
| Residences | Buda Castle Bratislava Castle Castle of Diósgyőr |
| Appointer | Primogeniture Royal Diet |
| Pretender(s) | Karl von Habsburg |
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The King of Hungary (Hungarian: Magyarország királya) was the ruling head of state of the Kingdom of Hungary from 1000 (or 1001) to 1918. The style of title "Apostolic King of Hungary" (Magyarország apostoli királya) was endorsed by Pope Clement XIII in 1758 and used afterwards by all monarchs of Hungary.