Kenneth Farrand Simpson (May 4, 1895 – January 25, 1941) was a Republican member of the United States House of Representatives from New York.
Simpson was born in New York City on May 4, 1895, the son of Dr. William Kelly Simpson, a noted ear nose and throat specialist and Professor at Columbia University. He graduated from The Hill School, and his senior year was notable for his success at convincing Theodore Roosevelt to speak at the school. He graduated from Yale University in 1917, where he became a member of Phi Beta Kappa and was initiated into Skull and Bones, receiving the honor of "last man tapped."
Simpson served in World War I as a member of the 302nd Field Artillery Regiment, a unit of the 76th Division, attaining the rank of captain. He later served as Commandant of the American School Detachment at the University of Aix-Marseilles.
Simpson graduated from Harvard Law School in 1922 and became an attorney. He was active in the art world of post-war France, and worked with the French government to recover works stolen by the Germans during the war. He also represented many artists and writers with whom he was friendly, including Pablo Picasso, Alexander Kerensky, Edmund Wilson, and Gertrude Stein. (Simpson's congressional campaign materials depicted him in his living room, leaning near a statue of Stein and smoking a pipe under a painting by Jean Lurçat.)