James Lane Buckley (March 9, 1923 – August 18, 2023) was an American politician and judge who served in the United States Senate as a member of the Conservative Party of New York State in the Republican caucus from 1971 to 1977 and additionally held multiple positions within the Reagan administration. He was also the Republican nominee in the 1980 Connecticut Senate race, but he was defeated by Democrat Chris Dodd.