Charles Zephaniah Platt (July 22, 1773 – April 14, 1822) was an American politician.
He was one of twelve children born to Mary Van Wyck Platt (1743–1809) and Zephaniah Platt (1735–1807), a politician and lawyer who founded Plattsburgh, New York.
[1] Through his brother Jonas, he was the uncle of Zephaniah Platt, the Attorney General of Michigan.
[3] On October 4, 1803, he married Sarah Bleecker (1785–1832) at the Dutch Reformed Church in Albany, New York.
[6] Platt died on April 14, 1822, in Greenbush,[7] Rensselaer County, New York.