Lucas Conrad Elmendorf (1758 – August 17, 1843) was a United States Representative from New York.
Biography Born in Kingston, New York, he graduated from Princeton College in 1782, studied law, and was admitted to the bar in 1785 and practiced.
He was elected as a Democratic-Republican to the Fifth, Sixth, and Seventh Congresses, serving from March 4, 1797 to March 3, 1803. He declined to be a candidate for renomination in 1802 and was a member of the New York State Assembly in 1804 and 1805. He served in the New York Senate from 1814 to 1817 and was the first judge of the Court of Common Pleas (now county court) of Ulster County, serving from 1815 to 1821. He was surrogate of Ulster County from 1835 to 1840.
He died in Kingston in 1843; interment was in the crypt of the First Dutch Church.
References United States Congress. "Lucas Elmendorf (id: E000153)". Biographical Directory of the United States Congress.