John Astor (disambiguation)
John Astor may refer to:
- John Jacob Astor, Sr. (1763–1848) (born Johann Jakob Astor), German-born fur-trader and the first multimillionaire in the United States
- John Jacob Astor, Jr. (1791–1869) (eldest son of John Jacob Astor, Sr.), occasional poet, sickly and mentally unstable, never married or had children
- John Jacob Astor III (1822–1890) (nephew of John Jacob Astor, Jr. and eldest son of William Backhouse Astor, Sr.), financer and philanthropist, the wealthiest member of the Astor family in his generation; founder of the English branch of the Astor family
- John Jacob "Jack" Astor IV (1864–1912) (nephew of John Jacob Astor III and only son of William Backhouse Astor, Jr.), millionaire businessman, real estate builder, inventor, writer, lieutenant colonel in the Spanish-American War, died on the RMS Titanic
- John Jacob Astor V (1886–1971) (youngest son of William Waldorf Astor and grandson of John Jacob Astor III), English military officer, statesman, and newspaper proprietor
- John Jacob "Jakey" Astor VI (1912–1992) (younger son of John Jacob Astor IV), socialite and shipping businessman, born four months after his father died in the Titanic
- John Jacob "Jakie" Astor VII (1918–2000) (nephew of John Jacob Astor V and youngest son of Waldorf Astor), English politician and sportsman
- John Jacob "Johnny" Astor VIII (born 1946) (elder son of Gavin Astor and grandson of John Jacob Astor V), English businessman and Conservative politician elected hereditary peer in the House of Lords
- John Rudolph Astor (1881–1881) (middle son of William Waldorf Astor), died young
- John Astor (1923–1987) (youngest son of John Jacob Astor V), Conservative Member of Parliament for Newbury
- John William Astor (1962–1963) (younger son of John Jacob Astor VII), died young