20th-century queens regnant

Elizabeth II was Queen of the United Kingdom and other Commonwealth realms from 6 February 1952 until her death in 2022. She was queen regnant of 32 sovereign states during her lifetime and was the monarch of 15 realms at her death. Her reign of 70 years and 214 days is the longest of any British monarch, the second-longest of any sovereign state, and the longest of any queen regnant in history.

Victoria was Queen of the United Kingdom of Great Britain and Ireland from 20 June 1837 until her death in 1901. Her reign of 63 years and 216 days, which was longer than those of any of her predecessors, constituted the Victorian era, a period of industrial, political, scientific, and military change within the United Kingdom marked by a great expansion of the British Empire. In 1876, the British parliament voted to grant her the additional title of Empress of India.

Queen of Denmark from 1972 to 2024 (born 1940)

Queen of the Netherlands from 1980 to 2013 (born 1938)

Queen of the Netherlands from 1890 to 1948 (1880-1962)

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

thumb|Postcard depiction of Queen Binao, circa 1904.