Donald Arthur Hatch (May 20, 1930 – September 24, 2020) was a Canadian agrologist, aviator, writer, and humanist lecturer, born in Guelph, Ontario, Canada. He was the author of numerous scholarly articles published in various Canadian journals. He was also the author of a thought-provoking work on philosophy and religion entitled The Road Not Travelled: How the Democracy, Science and Humanism of the Greeks Was Suppressed by the Early Christian Church and How That Obstructed the Progress of Humanity. The thoughts expressed therein are generally consonant with the credo of Humanist Canada, and other humanist associations around the world.