Sir James Cochran Stevenson Runciman, known as Steven Runciman, was an English historian best known for his three-volume A History of the Crusades (1951–54). His works had a profound impact on the popular conception of the Crusades.

Walter Runciman, 1st Viscount Runciman of Doxford, was a prominent Liberal and later National Liberal politician in the United Kingdom. His 1938 diplomatic mission to Czechoslovakia was key to the enactment of the British policy of appeasement of Nazi Germany preceding the Second World War.