class="wikitable sortable"
!Nation / territory
!colspan=2|Monarch
!width=150pt|Title
!Birth
!Reigned from
!Reign ceased
!Reason
!Death
!Arms
!Ref |
{{flagcountry|Albanian Kingdom (1939–43)}}
| 80px
| Victor Emmanuel III | King of Albania
| 11 November 1869
| 16 April 1939
| 3 September 1943
| Armistice of Cassibile
| 28 December 1947
| align=center|70px
|[{{Cite book|url=https://books.google.com/books?id=wm_YDAAAQBAJ&dq=Victor+Emmanuel+III++throne+of+albania+1943&pg=PA91|title=World War II: The Definitive Encyclopedia and Document Collection [5 volumes]: The Definitive Encyclopedia and Document Collection|last=Tucker|first=Spencer C.|publisher=ABC-CLIO|year=2016|isbn=9781851099696|volume=I|location=Santa Barbara, CA|pages=91|language=en}}] |
{{flagicon image|Flag of Lusignan dynasty.webp}} Armenia
| 80px
| Levon V | King of Armenia
| 1342
| 1374
| 1375
| Deposed
| 29 November 1393
| align=center|70px |
{{flagcountry|Austria-Hungary}}
| 117x117px
| Charles I and IV | Emperor of Austria and King of Hungary
| 17 August 1887
| 21 November 1916
| 11 & 13 November 1918
| "Relinquished participation in the administration of the State"
| 1 April 1922
| align="center" |70px
|[Edward P. Keleher, "Emperor Karl and the Sixtus Affair: Politico-Nationalist Repercussions in the Reich German and Austro-German Camps, and the Disintegration of Habsburg Austria, 1916-1918." East European Quarterly 26.2 (1992): 163+.] |
{{flagcountry|Kingdom of Bulgaria}}
| 100x100px
| Simeon II | Tsar of Bulgaria
| 16 June 1937
| 28 August 1943
| 15 September 1946
| Republican constitution adopted
| Living
| align=center|70px
|[{{Cite web|url=https://www.euractiv.com/section/enlargement/interview/bulgarias-simeon-time-to-leave-a-mark-after-so-many-years-of-isolation/|title=Bulgaria's Simeon: Time to leave a mark after so many years of isolation|last=Gotev|first=Georgi|date=2017-11-20|website=euractiv.com|language=en-GB|access-date=2019-01-23}}] |
{{flagcountry|Independent State of Croatia}}
| 80px
| Tomislav II | King of Croatia
| 9 March 1900
| 18 May 1941
| 31 July 1943
| Abdicated
| 29 January 1948
| align=center|70px
|[{{Cite book|url=https://books.google.com/books?id=y0in2wOY-W0C&q=the+state+of+croatia|title=Axis Rule in Occupied Europe: Laws of Occupation, Analysis of Government, Proposals for Redress|last=Lemkin|first=Raphael|publisher=The Lawbook Exchange, Ltd.|year=2005|isbn=9781584779018|location=Clark, NJ|pages=253|language=en|orig-year=1944}}] |
{{flagicon image|Stemma reale di Giano di Cipro.svg}} Cyprus
| 80px
| Catherine | Queen of Cyprus
| 25 November 1454
| 26 August 1474
| 26 February 1489
| Abdicated
| 10 July 1510
| align=center|70px
|[{{cite book|first1=H. E. L. |last1=Mellersh |first2=Neville |last2=Williams|title=Chronology of world history|url=https://books.google.com/books?id=PCcOAQAAMAAJ |year=1999|publisher=ABC-CLIO|isbn=978-1-57607-155-7 }}] |
{{flagcountry|Second French Empire}}
| 124x124px
| Napoleon III | Emperor of the French
| 20 April 1808
| 2 December 1852
| 4 September 1870
|Abdicated
| 9 January 1873
| align=center|70px
|[{{Cite book|url=https://books.google.com/books?id=g6GaBAAAQBAJ&dq=Napoleon+III+1870+abdicate&pg=PA524|title=Voyages in World History, Volume II, Brief|last1=Hansen|first1=Valerie|last2=Curtis|first2=Kenneth R.|publisher=Cengage Learning|year=2016|isbn=9781305537729|volume=2|location=Boston. MA|pages=524|language=en}}] |
{{flagcountry|German Empire}}
| 80px
| Wilhelm II | Emperor of Germany, King of Prussia
| 27 January 1859
| 15 June 1888
| 9 November 1918
| Abdicated
| 9 June 1941
| align="center" |70px
|[{{Cite book|url=https://books.google.com/books?id=xTnqCQAAQBAJ|title=Wilhelm II: Volume 2, Emperor and Exile, 1900-1941|last=Cecil|first=Lamar|publisher=University of North Carolina Press|year=1996|isbn=9780807860748|location=Chapel Hill, NC|pages=292|language=en}}] |
{{flagcountry|Kingdom of Greece}}
| 117x128px
| Constantine II | King of the Hellenes
| 2 June 1940
| 6 March 1964
| 1 June 1973
| Deposed
| 10 January 2023
| align=center|70px
|[{{Cite web|url=https://www.townandcountrymag.com/society/politics/news/a3607/king-without-a-country/|title=Why Is the King of Greece Living as a Commoner?|last1=Gage|first1=Nicholas|last2=Gage|first2=Joan Paulson|date=2015-08-21|website=Town & Country|language=en-US|access-date=2019-01-23}}] |
{{flagcountry|Kingdom of Iceland}}
| 113x113px
| Christian X | King of Iceland
| 26 September 1870
| 14 May 1912
| 17 June 1944
| Republican constitution adopted
| 20 April 1947
| align=center|70px
|[{{Cite web|url=https://grapevine.is/mag/articles/2014/05/29/the-nazi-king-of-iceland/|title=The Nazi King Of Iceland|last=Guðmundsson|first=Helgi Hrafn|date=29 May 2014|website=The Reykjavik Grapevine|language=en-US|access-date=2019-01-23}}] |
{{flagcountry|Irish Free State}}
| 80px
| George VI | King of Great Britain, Ireland and the British Dominions beyond the Seas
| 14 December 1895
| 11 December 1936
| 29 December 1937
| Constitution of Ireland
| 6 February 1952
| align=center|70px |
{{flagcountry|Kingdom of Italy}}
| 80px
| Umberto II | King of Italy
| 15 September 1904
| 9 May 1946
| 18 June 1946
| Republican constitution adopted
| 18 March 1983
| align=center|70px
|[{{Cite book|url=https://books.google.com/books?id=axgfeXGFvF8C|title=Italy and Its Monarchy|last=Mack Smith|first=Denis |authorlink= Denis Mack Smith|publisher=Yale University Press|year=1992|isbn=9780300051322|pages=340|language=en}}] |
{{flagicon image|Flag of Kingdom of Kartli-Kakheti.svg}} Kartli-Kakheti (Eastern Georgia)
| File:George XII of Georgia.jpg
| George XII | King of all Georgia, King of all Kartli, Kakheti and all the other lands
| 10 November 1746
| 11 January 1798
| 28 December 1800
| Death
| 28 December 1800
| align=center|70px |
{{flagcountry|State of Malta}}
| 80px
| Elizabeth II | Queen of Malta
| 21 April 1926
| 21 September 1964
| 13 December 1974
| Republican constitution adopted
| 8 September 2022
| align=center|70px
|[{{Cite web|url=https://www.timesofmalta.com/articles/view/20091212/opinion/the-republic-of-malta.285600|title=The Republic of Malta|last=Zammit Marmarà|first=Desmond|date=12 December 2009|website=Times of Malta|language=en-GB|access-date=2019-01-23}}] |
{{flagcountry|Kingdom of Montenegro}}
|File:Nicholas I of Montenegro.jpg
| Nicholas I | King of Montenegro
| 7 October 1841
| 28 August 1910
| 26 November 1918
| Monarchy abolished
| 1 March 1921
| align=center|70px
|[{{Cite web|url=https://www.rferl.org/a/montenegro_bill_rehabilitate_royal_family/4747540.html|title=Government Bill Aims To Rehabilitate Montenegro's Royal Family|date=18 April 2011|website=RadioFreeEurope/RadioLiberty|language=en|access-date=2019-01-23}}] |
{{flagcountry|Kingdom of Portugal}}
| 125x125px
| Manuel II | King of Portugal and the Algarves
| 15 November 1889
| 1 February 1908
| 5 October 1910
| Monarchy abolished
| 2 July 1932
| align=center|70px
|[{{Cite web|url=http://royalcentral.co.uk/blogs/what-happened-to-portugals-monarchy-108403|title=What happened to Portugal's monarchy?|last=Starbuck|first=Lydia|date=2018-09-22|website=Royal Central|language=en-GB|access-date=2019-01-23}}] |
{{flagcountry|Kingdom of Romania}}
| 80px
| Michael I | King of Romania
| 25 October 1921
| 6 September 1940
| 30 December 1947
|Monarchy abolished
| 5 December 2017
| align=center|70px
|[{{Cite news|url=https://www.theguardian.com/world/2017/dec/05/michael-1-of-romania|title=Michael I of Romania Obituary: Former monarch and last surviving head of state from the second world war|last=Dunlop|first=Tessa|date=2017-12-05|work=The Guardian|access-date=2019-01-23|language=en-GB|issn=0261-3077}}] |
{{flagcountry|Russian Empire}}
| 111x111px
| Nicholas II | Emperor and Autocrat of all the Russias
| 18 May 1868
| 1 November 1894
| 15 March 1917
| Abdicated
| 17 July 1918
| align=center|70px
|[{{Cite book|url=https://archive.org/details/nicholasii00marc|url-access=registration|title=Nicholas II: Last of the Tsars|last=Ferro|first=Marc|date=1995|publisher=Oxford University Press|isbn=9780195093827|language=en}}] |
{{flagcountry|Kingdom of Yugoslavia}}
| 80px
| Peter II | King of Yugoslavia
| 6 September 1923
| 9 October 1934
| 29 November 1945
|Deposed
| 3 November 1970
| align=center|70px
|[{{Cite web|url=https://www.pri.org/stories/2013-05-26/serbia-holds-state-funeral-yugoslavias-last-king|title=Serbia holds state funeral for Yugoslavia's last king|last=Langlois|first=Jill|date=26 May 2013|website=Public Radio International|language=en|access-date=2019-01-23}}] |