William Hunter Jr.
Portrait by Charles Bird King, 1824
1st United States Minister to Brazil
In office January 1, 1842 – December 9, 1843
President	John Tyler
Preceded by	Himself (as Chargé d'Affaires)
Succeeded by	George H. Proffit
4th United States Chargé d'Affaires to Brazil
In office January 7, 1835 – January 1, 1842
President	Andrew Jackson Martin Van Buren William Henry Harrison John Tyler
Preceded by	Ethan Allen Brown
Succeeded by	Himself (as Minister)
United States Senator from Rhode Island
In office October 28, 1811 – March 3, 1821
Preceded by	Christopher G. Champlin
Succeeded by	James De Wolf
Member of the Rhode Island House of Representatives
In office 1823–1825 1799–1812
Personal details
Born	(1774-11-26)November 26, 1774 Newport, Rhode Island
Died	December 3, 1849(1849-12-03) (aged 75) Newport, Rhode Island
Resting place	Trinity Church Graveyard
Political party	Federalist
Alma mater	Rhode Island College
Occupation	Lawyer, diplomat

William Hunter Jr. (November 26, 1774 – December 3, 1849) was an American politician and diplomat and owner of the Hunter House, now a museum.

Hunter was born in Newport, Rhode Island, as the youngest son of seven children of Debora Malbone Hunter and Dr. William Hunter, a prominent Newport doctor, scholar and merchant.^[1] He attended the Rogers School and graduated from the College of Rhode Island and Providence Plantations (the former name of Brown University) at Providence in 1791. In 1791 he went to England to study medicine, but when he arrived there he changed his mind and studied law. He returned to the United States in 1793 and established a law practice in Newport. He was a member of the Rhode Island General Assembly from 1799 to 1812, a member of the United States Senate from Rhode Island from 1811 to 1821, and a member of the Rhode Island House of Representatives from 1823 to 1825. Hunter had been elected by the state legislature to the United States Senate in 1811 after a senator resigned, and elected to a full term in 1814. On June 17, 1812, he was one of 13 senators who voted against declaring war against Britain. He was a member of the United States Federalist Party in the Senate, and served as chairman of the Commerce Committee from 1815 to 1817.

Hunter was elected a member of the American Antiquarian Society in 1815.^[2]

He was a member of the Artillery Company of Newport, a militia unit to which many of Newport's leading citizens belonged.

After leaving the Senate, Hunter continued to practice law in Newport. In 1836, he was appointed by President Andrew Jackson to be the United States representative to Brazil. He served in this position for 9 years, through multiple presidents, until 1845, and then returned to Newport, where he died four years later. Hunter is buried in the Trinity Church graveyard.

Information about his political beliefs and activities while in the Senate is not easily available. One opinion that he is known for is that he believed that the state of Massachusetts was exaggerating its role in the Revolutionary War.^{[citation needed]}

• List of United States political appointments that crossed party lines

• United States Congress. "William Hunter (id: H000991)". Biographical Directory of the United States Congress.
• William Hunter at Find a Grave
• "Brazil" (List of Ambassadors to Brazil). United States Department of State. 2006. Retrieved 2011-03-08.