Irving McNeil Ives (January 24, 1896 – February 24, 1962) was an American politician.
A member of the Republican Party, he served as a United States Senator from New York from 1947 to 1959.
He was previously a member of the New York State Assembly for sixteen years, serving as Minority Leader (1935), Speaker (1936), and Majority Leader (1937–1946).
A liberal Republican, he was known as a specialist in labor and civil rights legislation.