Nicholas Sickles (September 11, 1801 – May 13, 1845) was an American attorney and politician in the U.S. state of New York.

He was elected as a Jacksonian candidate to the Twenty-fourth Congress, serving from December 7, 1835, to March 3, 1837.

[2] After leaving Congress, he served as prosecuting attorney of Ulster County, New York in 1836 and 1837.

Sickles served as surrogate of Ulster County from January 1, 1844, until his death in Kingston, New York on May 13, 1845.

[5] This article incorporates public domain material from the Biographical Directory of the United States Congress