Archibald Ladley Linn (October 15, 1802 – October 10, 1857) was a U.S. Representative from New York.Born in New York City, Linn was a member of the class of 1820 at Union College, Schenectady, New York. He studied law, was admitted to the bar and commenced practice in Schenectady. He served as county judge of Schenectady County from January 17, 1840, to February 9, 1845.Linn was elected as a Whig to the Twenty-seventh Congress (March 4, 1841 – March 3, 1843).