John Beardsley (November 9, 1783 – May 11, 1857) was an American farmer, merchant, banker and politician from New York.
On December 16, 1804, he married Alice Booth (1786–1877), and they had twelve children.
[2] He died on May 11, 1857, in Auburn, New York; and was buried at the Fort Hill Cemetery there.
His son Nelson Beardsley (1807–1894), law partner of William H. Seward from 1831 to 1842,[3] was married to Frances Powers (1815–1854), daughter of State Senator James Powers.
His son Roswell Beardsley (1809–1902) was for 74 years Postmaster of North Lansing, appointed by John Quincy Adams on June 28, 1828, and died in office as the oldest postmaster in the United States.