The 1845 United States Senate special election in New York was held on January 18, 1845 by the New York State Legislature to elect two U.S. Senators (Class 1 and Class 3) to represent the State of New York in the United States Senate. The regular 1845 United States Senate election in New York was held on February 4, 1845, to elect a U.S. Senator (Class 1) to represent the State of New York in the United States Senate.