The Quincy family /ˈkwɪnzi/ was a prominent political family in Massachusetts from the mid-17th century through to the early 20th century. It is connected to the Adams family through Abigail Adams.
The family estate was in Mount Wollaston, first independent, then part of Braintree, Massachusetts, and now the city of Quincy. The remaining pieces of the Quincy homestead are the Josiah Quincy House and the Dorothy Quincy Homestead, after the land was broken up into building lots called Wollaston Park in the 19th century and the Josiah Quincy Mansion was demolished in 1969.
The names of President John Quincy Adams, , the USS Quincy, Quincy House at Harvard, Quincy House in Washington, D.C., and Quincy Market in Boston are among the legacies of the Quincy family name.