Clement Clarke Moore (July 15, 1779 – July 10, 1863) was an American professor of Oriental and Greek literature at Columbia College, now Columbia University. He donated land from his family estate for the foundation of the General Theological Seminary, where he was a professor of Biblical learning and compiled a two-volume Hebrew dictionary. He is generally considered to be the author of the yuletide poem "A Visit from St. Nicholas", which later became famous as "'Twas the Night Before Christmas".
He was born on July 15, 1779, to Benjamin Moore and Charity Clarke and grew up in the family residence in Elmhurst, Queens. Clement Clarke Moore was a graduate of Columbia College (1798), where he earned both his B.A. and his M.A..
In 1820, Moore helped Trinity Church organize a new parish church, St. Lukes in the Fields, on Hudson Street, and the following year he was made professor of Biblical learning at the General Theological Seminary in New York, a post that he held until 1850. The ground on which the seminary now stands was his gift.