Afghanistan
Empire: 1737-1823
Emirate: 1823-1926
Kingdom: 1926-1973
Last Ruler: 1933-1973 – Mohammed Zahir Shah, King of Afghanistan (1914-2007)
Head of the family: Ahmad Shah, Crown Prince of Afghanistan (1934)
Married 1961 Princess Khatul Begum and had issue:
- Prince Muhammad Zahir Khan (1962), married to Princess Oshila Begum (1958). Issue: Princess Roxanne Khanum (1988)
- Princess Hawa Khanum (1963), married to Sultan Muhammad Nawaz (1963)
- Prince Muhammad Emel Khan (1969)
Albania
Kingdom: 1914-1925, 1928-1939, 1939-1943 as part of the Italian monarchy
Last Ruler: 1928-1939 – Zog I, King of the Albanians (1895-1961)
Head of the family: Crown Prince Leka II of the Albanians (1982)
Married 2016 Elia Zaharia (1983) and had issue:
- Princess Geraldine (2020)
Austria
Monarchy since 1282
Empire: 1804-1918
Last Ruler: 1916-1918 – Emperor Karl I of Austria, King of Hungary, Croatia, Bohemia (1887-1922)
Head of the family: Archduke Karl of Austria (1961), known as Karl (von) Habsburg
Married 1993 (div. 2017) Baroness Francesca Thyssen-Bornemisza (1958) and had issue:
- Archduchess Eleonore (1994), married 2020 Jérôme D’Ambrosio (1985)
- Archduke Ferdinand (1997) – Heir
- Archduchess Gloria (1999)
Brazil
Empire: 1822-1889
Last Ruler: 1831-1889 – Pedro II, Emperor of Brazil (1825-1891)
Head of the family: Prince Luiz de Orléans e Bragança (1938)
Unmarried
Heir: Prince Bertrand de Orléans e Bragança (1941)
Unmarried
Bulgaria
First Empire: 681-1018
Second Empire: 1185-1396 (1422?)
Principality: 1878-1908
Kingdom: 1908-1946
Last Ruler: 1943-1946 – King Simeon II of the Bulgarians (1937)
Married 1962 Margarita Gómez-Acebo y Cejuela (1935) and had issue:
- Crown Prince Kardam (1962-2015), married 1996 Miríam Ungria y López (1963): Crown Prince Boris (1997), Prince Beltran (1999)
- Prince Kyrill (1964), married 1989 (separated) Rosario Nadal y Fuster Puigdorfila (1968): Princess Mafalda (1994), Princess Olimpia (1995), Prince Tassilo (2002)
- Prince Kubrat (1965), married 1993 Carla Royo-Villanova y Urrestarazu (1969): Prince Mirko (1995), Prince Lucas (1997), Prince Tirso (2002)
- Prince Konstantin-Assen (1967), married 1994 María García de la Rasilla y Gortazar (1970): Prince Umberto (1999), Princess Sofia (1999)
- Princess Kalina (1972), married 2002 Antonio Muñoz Valçarcel (1958)
Burma
Several monarchies existed in the territory of Burma (Myanmar) since 1044.
1752-1885: Konbaung dynasty
Last Ruler: 1878-1885 – Thibaw Min, King of Burma (1859-1916)
Head of the family (?): Maha Chandra Kumara Soe Win (1947)
Married to Daw Tin Lay Wai
Burundi
Kingdom: at least ca. 1530-1966
Last Ruler: 1966 – King Ntare V of Burundi (1947-1972)
Head of the family: Rosa Paula Iribagiza Mwambutsa (1934), sister of Ntare V.
Married first Chief André Muhirwa of Busumanyi (1920) and had issue:
- Prince Rémy Ciza Muhirwa, married to Pascale Hody (divorced) and Michèle Ingabire Gateretse. Issue: Tenzin Muhirwa (2003), Rania Muhirwa (2004)
- Prince Charles Muhirwa
- Princess Louise Muhirwa (1956-2019), married to Camille Ngoga
- Princess Michelle Muhirwa
She has further issue:
- (with François Bourgeon): Anita Iribagiza (1970)
- (with Hamisi Masud Kiliza) Sheila Babile Kiliza (1973-2020), married 1995, Jérôme Bosman (1968) and had issue.
- (with Hamisi Masud Kiliza) David Kabunga wa Mwabutsa Hamisi Kiliza (1974)
Married secondly 1984 Frédéric Van de Sande.
- Algeria 1830
- Barbados 2021
- Central Africa 1979
- Ceylon 1971
- China 1912/16
- Egypt 1953
- Ethiopia 1974
- Fiji 1987
- Finland 1917-1918
- France
- Gambia 1971
- Germany (Prussia) 1918
- Ghana 1960
- Greece 1924-1935, -1967/73
- Guyana 1971
- Haiti
- Hannover (Brunswick) 1918
- Hessen 1918
- Hohenzollern
- Hungary 1946
- Iceland 1944
- India 1950
- Iran 1979
- Iraq 1958
- Ireland 1949
- Italy 1946
- Kongo 1914
- Korea 1910
- Laos 1975
- Libya 1969
- Lippe 1918
- Lithuania 1918
- Madagascar
- Malawi 1966
- Maldives 1968
- Malta 1974
- Mauritius 1992
- Mecklenburg-Schwerin 1918
- Mecklenburg-Strelitz 1918
- Mexico
- Mongolia 1924
- Montenegro 1944
- Nepal 2008
- Nigeria 1963
- Oldenburg
- Pakistan 1956
- Parma
- Poland 1918
- Portugal 1910
- Reuss 1918 (Elder & Younger Line)
- Rhodesia 1970
- Romania 1947
- Russia
- Rwanda 1961
- Rwenzururu 1982 (in Uganda)
- Sarawak 1946
- Sardinia 1849
- Saxe-Altenburg 1918
- Saxe-Coburg and Gotha 1918
- Saxe-Weimar-Eisenach 1918
- Saxony 1918
- Schaumburg-Lippe 1918
- Schleswig-Holstein
- Schwarzburg-Rudolstadt 1918
- Schwarzburg-Sondershausen 1918
- Serbia (Yugoslavia) 1945
- Sierra Leone 1971
- Sikkim 1975
- Somalia
- South Africa 1960
- Sri Lanka 1816
- Sudan 1898
- Syria 1920
- Tahiti 1880
- Tanganyika 1962
- Tibet 1951
- Trinidad and Tobago 1976
- Tunisia 1957
- Turkey 1922
- Tuscany 1859/60
- Two Sicilies 1860/61
- Uganda 1963
- Ukrain 1918
- Uzbekistan (Bukhara & Khiva) 1920
- Vietnam 1945
- Waldeck und Pyrmont 1918
- Württemberg 1918
- Yemen 1962
- Zanzibar 1964
https://en.wikipedia.org/wiki/Abolition_of_monarchy
https://en.wikipedia.org/wiki/List_of_monarchs_who_lost_their_thrones_in_the_19th_century