William Morley Kilbourn OC FRSC (18 December 1926 – 4 January 1995) was a Canadian author, historian, professor, and politician.

Kilbourn wrote on various topics in Canadian history, including economics, religion, and biography.

Kilbourn entered Trinity College, University of Toronto and graduated bachelor of arts in 1948.

In the fall of 1949, Kilbourn moved to England to study at Oxford, and in 1952 he earned a second bachelor's degree.

The ceremony took place at the Church of St John the Evangelist and was conducted by the Philip Sawyer.