Filippo Mazzei (Italian pronunciation: [matˈtsei], but sometimes erroneously cited with the name of Philip Mazzie; December 25, 1730 – March 19, 1816) was an Italian physician. A close friend of Thomas Jefferson, Mazzei acted as an agent to purchase arms for Virginia during the American Revolutionary War.
Mazzei was born Filippo Mazzei in Poggio a Caiano in Tuscany as a son of Domenico and Elisabetta. He studied medicine in Florence and practiced in Italy and the Middle East for several years before moving to London in 1755 to take up a mercantile career as an importer. In London he worked as a teacher of Italian language. While in London he met the Americans Benjamin Franklin and Thomas Jefferson of Virginia. While doing work for Franklin, Mazzei shared his idea of importing Tuscan products, wine and olive trees, to the New World. They convinced him to undertake his next venture.
On September 2, 1773 Mazzei boarded a ship from Livorno to Virginia bringing with him plants, seeds, silkworms, and 10 farmers from Lucca. While visiting Jefferson at his estate, the two became good friends and Jefferson gave Mazzei a large allotment of land for an experimental plantation.Mazzei and Jefferson started what became the first commercial vineyard in the Commonwealth of Virginia. They shared an interest in politics and libertarian values, and maintained an active correspondence for the rest of Mazzei's life.
In 1779 Mazzei returned to Italy as a secret agent for the state of Virginia. He purchased and shipped arms to them until 1783. After briefly visiting the United States again in 1785, Mazzei travelled throughout Europe promoting Republican ideals. He wrote a political history of the American Revolution, 'Recherches historiques et politiques sur les Etats-Unis de l'Amerique septentrionale", and published it in Paris in 1788. After its publication Mazzei became an unofficial roving ambassador in Europe for American ideas and institutions.