The 1956 United States Senate elections in Kansas took place on November 6, 1956. Incumbent Republican Senator Frank Carlson ran for re-election to a second full term. He won a contested Republican primary and then faced George Hart, the 1954 Democratic nominee for Lieutenant Governor, in the general election. Carlson defeated Hart in a landslide, as Republican President Dwight D. Eisenhower carried Kansas in a landslide over Democratic presidential nominee Adlai Stevenson.