20th-century women regents

Chinese empress (1835–1908)

Queen of the Netherlands from 1948 to 1980 (1909-2004)

queen/empress consort of Iran from 1959 to 1979

Sirikit (born Mom Rajawongse Sirikit Kitiyakara; 12 August 1932 – 24 October 2025) was Queen of Thailand from 28 April 1950 to 13 October 2016 as the wife of King Bhumibol Adulyadej (Rama IX).

Queen consort of Spain (1858-1929)

Queen of the Hellenes (1851–1926)

Grand Duchess consort and regent of Luxembourg (1861-1942)

Queen consort of Montenegro

Ntfombi Tfwala (also spelled Ntombi, born 27 December 1949) is Ndlovukati (Queen Mother) of Eswatini since 1983, as the mother and co-ruler of King Mswati III. She was also queen regent of Eswatini from 1983 until her son's accession in 1986.

Srinagarindra (; ; 21 October 1900 – 18 July 1995) born Sangwan Talapat (; ) was a member of the Royal Thai Family. She was part of the House of Mahidol, which is descended from the Chakri dynasty and was founded by Prince Mahidol Adulyadej. She was the mother of Princess Galyani Vadhana, King Ananda Mahidol (Rama VIII), and King Bhumibol Adulyadej (Rama IX) and was the paternal grandmother of King Vajiralongkorn (Rama X).

Chinese empress during the end of the Qing dynasty (1868-1913)

Grand Duchess consort of Hesse and by Rhine (1871–1937)

Queen regnant of Lesotho (1941–2003)

Mantšebo (in full: '''Mantšebo Amelia 'Matšaba'''; 1902–1964) was the ruler of Basutoland (present-day Lesotho) from 1941 to 1960, as the regent for her stepson, the future Moshoeshoe II.

Swazi royal regent

Senior Maharani of Travancore and Regent of Travancore. (1895–1985)

Wife of the Maharaja of Mysore

Maharani of Cooch Behar

Yazidi princess (1874–1957)

Regent of the BaNgwaketse, one of the eight ethnic groups of present-day Botswana, for four years (1924-1928)

Queen of Tripura state and politician

Mwamikazi Nidi Ririkumutima Bizima Bitazimiza Mwezi, commonly known as Ririkumutima, (died 28 July 1917) was Queen Regent of Burundi from 1908 to her death. She was married to the king (mwami) of Burundi, Mwezi IV Gisabo in the mid 1890s and she was his favourite wife. However, when king Mwezi IV died in 1908, Ririkumutima fell out of royalty as Mutaga IV Mbikije, one of his sons, became king. This led to a lot of strife in the kingdom.

Indian politician (1926-2018)