Ruby Laffoon (January 15, 1869 – March 1, 1941) was the 43rd Governor of Kentucky, serving from 1931 to 1935. His term saw the imposition of the first sales tax in the state, which was passed after substantial political wrangling that saw the Democratic Party in the state fracture. This resulted in sharp political infighting that saw Laffoon's efforts to prevent his lieutenant governor from succeeding him fail.