Josiah Quincy may refer to:
- Josiah Quincy I (1710–1784), American merchant, colonel of militia, built Josiah Quincy House (1770)
- Josiah Quincy II (1744–1775), American attorney, "the Patriot", newspaper propagandist, son of Josiah Quincy I
- Josiah Quincy III (1772–1864), American president of Harvard University (1829–1845), U.S. representative (1805–1813), mayor of Boston (1823–1828), son of Josiah Quincy II
- Josiah Quincy, Jr. (1802–1882), American mayor of Boston (1846–1848), built Josiah Quincy Mansion (1848), son of Josiah Quincy III
- Josiah Phillips Quincy (1829–1910), American poet, writer, and publicist, son of Josiah Quincy, Jr.
- Josiah Quincy (1859–1919), American General Court representative, Assistant Secretary of the Navy, mayor of Boston (1895–1899), son of Josiah Phillips Quincy
- Josiah Quincy House, the country home of Revolutionary War soldier Colonel Josiah Quincy I
- Quincy Mansion, a summer home built by Josiah Quincy, Jr.
- Quincy political family, a prominent political family
|This disambiguation page lists articles about people with the same name. If an internal link led you here, you may wish to change the link to point directly to the intended article.|