John Forsyth (October 22, 1780–October 21, 1841) was a 19th century American politician from Georgia. He served in the United States House of Representatives (1813-1818, 1823-1827), the United States Senate (1818-1819, 1829-1834), and as the Governor of Georgia (1827-1839).

He was the United States Secretary of State from 1834 until 1841. In this role he led the government's response to the Amistad case.

Forsyth was born in Fredericksburg, Virginia. He was an attorney who graduated from the College of New Jersey (now Princeton University) in 1799. He married Clara Meigs in 1801 or 1802.

He died in Washington, DC.

|- style="text-align: center;" | width="30%" |Preceded by:
Louis McLane | width="40%" style="text-align: center;" |United States Secretary of State
July 1, 1834 – March 3, 1841 | width="30%" |Succeeded by:
Daniel Webster