The United States Senate election of 1956 in New York was held on November 6, 1956. Incumbent Senator Herbert H. Lehman retired after one term in the Senate. Republican Attorney General of New York Jacob K. Javits defeated Mayor of New York City Robert F. Wagner Jr. to win the open seat. The major parties met on September 10 in Albany and nominated Javits and Wagner unanimously, though not without some pre-convention campaigning.