William Watson Menzies (July 1, 1931 – August 15, 2011) was an American preacher, Pentecostal theologian, and educator whose 50-year ministry bridged scholarship and missions, leaving a lasting imprint on the Assemblies of God and global Pentecostalism. Born in New Kensington, Pennsylvania, to Watson Menzies and Agnes Watson, he grew up in a devout family, accepting Christ at age seven and feeling called to ministry by twelve. Raised in Pontiac, Michigan, he graduated from Central Bible College in Springfield, Missouri (1952), Wheaton College (B.A., 1953), and the University of Iowa (M.A. 1964, Ph.D. 1971), where his dissertation became Anointed to Serve (1971), a seminal history of the Assemblies of God. Ordained in 1956 by the Michigan District of the Assemblies of God, he married Doris Dresselhaus in 1955, raising two sons, Glen and Robert, both future scholars. Menzies’ preaching career blended pulpit ministry with academia. He pastored in Big Rapids, Michigan (1953–1956), before teaching at Central Bible College (1958–1970), Evangel University (1970–1980), and the Assemblies of God Theological Seminary (1980–1983), all in Springfield, Missouri. His sermons, rooted in expository clarity, inspired students and congregations alike, notably at Central Assembly of God, his home church for over 50 years. A co-founder of the Society for Pentecostal Studies in 1970, he edited its journal Pneuma and helped craft the Full Life Study Bible. From 1989 to 1996, he served as President of Asia Pacific Theological Seminary in Baguio, Philippines, preaching across Asia and mentoring missionaries, later becoming Chancellor until his death. His nine books, including Bible Doctrines: A Pentecostal Perspective (1993) with Stanley Horton, reflected his knack for making theology accessible.