The Astor family is a family notable for its prominence in business, society, and politics in the United States and England during the 19th and 20th centuries. The surname "Astor" is of German origin, appearing in North America during the eighteenth century with John Jacob Astor.
John Jacob Astor (born Johann Jakob Astor) was the youngest of four sons born to butcher Johann Jacob Astor (1724–1816) and Maria Magdalena Vorfelder (1730–1766). John and his eldest brother George Peter Astor (born Georg Peter Astor) (1752–1813), known as 'George & John Astor', were flute makers, who came to England c. 1778 from Walldorf, Germany. While working in England, he learned to speak English and anglicized his name. In 1783, John Jacob left for Baltimore, Maryland, and was active first as a dealer in woodwind instruments, then in New York as a merchant in furs, pianos, and real estate. After moving to New York, John met and married Sarah Cox Todd (1762–1842). Sarah was the daughter of Scottish immigrants Adam Todd and Sarah Cox. They had eight children, including occasional poet John Jacob Astor, Jr. (1791–1869) and real estate businessman William Backhouse Astor, Sr. (1792–1875).
John Jacob's fur trading company established a Columbia River trading post at Fort Astoria in 1811, the first United States community on the Pacific coast. He financed the overland Astor Expedition in 1810–1812 to reach the outpost, which was in the then-disputed Oregon Country. Control of Fort Astoria played a key role in English and American territorial claims on the region.
John and George's brother Henry Astor (born Heinrich Astor) (1754–1833) also emigrated to America. He was a horse racing enthusiast, and purchased a thoroughbred named Messenger, who had been brought from England to America in 1788. The horse became the founding sire of all Standardbred horses in the United States today. The third brother Melchior remained in Germany.
During the 19th century, the Astors became one of the wealthiest families in the United States. Toward the end of that century, some of the family moved to England and achieved high prominence there. During the 20th century, the number of American Astors began to decline, but their legacy lives on in their many public works including the New York Public Library. English descendants of the Astors hold two hereditary peerages: Viscount and Baron.
Beyond New York City, the Astor family name is imprinted in a great deal of United States history and geography. There are towns of Astor in the states of Florida, Georgia, Iowa, and Kansas and there are Astorias in Illinois, Missouri and Oregon. There is an Astor Park in Wisconsin.
John Richard Astor (born 1953) m. 1977 Katherine Mary Darell (born 1954) 
Emily Mary Astor (born 1980)
Charles John Astor (born 1982)
Tamara Sarah Diana Astor (born 1989)
George David Astor (born 1958) m. 1983 Marianne Piroska Julia Leche (born 1958) 
Thomas David Astor (born 1987)
Amy Violet Astor (born 1989)
Laura Eugenia Astor (1824–1902), married Franklin Hughes Delano (1813–1893) on September 17, 1844, great-uncle of President Franklin Delano Roosevelt
Mary Alida Astor (1826–1881) m. John Carey (1821–1881)
Margaret Laura Astor Carey (1853–1911) (4 children from 1st, 1 son from 2nd marriage), m. 1st 1875 (divorced) Alphonse Lambert Eugène, Ridder de Stuers (1841–1919) m. 2nd 1880 Count William Eliot Morris Zborowski (1858–1903)
Ivan Sergeyevich Obolensky (born 1925), financial analyst and corporate officer, 1st m. 1949 Claire Elizabeth McGinnis (born 1929) (div. 1956), 2nd m. 1959 Mary Elizabeth Morris (1934—2006)
Marina Ivanovna Knyazhna Obolensky (born 1951)
Ivan Ivanovich Knyaz Obolensky (born 1952)
David Ivanovich Knyaz Obolensky (born 1953) married 1981 Mary Catherine Hicks (born 1952)
Natalya Elizabeth Davidovna Knyaginya Obolensky (born 1984)
Octavia Willing Davidovna Knyaginya Obolensky (born 1989)
Sergei Ivanovich Knyaz Obolensky (born after 1959)
Sylvia Sergeievna Knyaginya Obolensky (1931-1997)
Romana von Hofmannsthal (born c. 1935) married Roderick McEwen (born 1932)
Flora Mary Alice McEwen (born 1959) married Anthony David Willard Mason
Nathaniel Mason (born 1993)
Brooke Emily Mason (born 1997)
Samantha Mary McEwen (born 1960)
Christabel Mary McEwen (born 1962) 1st m. 1983 Edward Richard Lambton (div.), 2nd m. 2005 Jools Miles Holland
Frederick Lambton (born 1985)
Mabel Ray Britannia Holland (born 1990)
Adam Hugo McEwen (born 1965)
Emily Edwina Harding (born 1942)
John Jacob "Jakey" Astor VI (1912–1992), socialite and shipping businessman, 1st m. 1934 Ellen Tuck "Tucky" French (1915—1974), cousin of William Henry Vanderbilt III (div. 1943), 2nd m. 1944 Gertrude Gretsch (1923—1999) (div. 1954), 3rd m. 1954 Dolores Margaret "Dolly" Fullman (born c. 1928) (separated and divorced shortly after marriage), 4th m. Sue Sanford
William Backhouse Astor III (1935–2008) m. (div.) Charlotte Ann Fisk (1936–2008)