William Henry Withrow (August 6, 1839 – November 12, 1908) was a Canadian Methodist minister, journalist, and author.

Previous to entering college, he spent three years in the office of architect William Hay of Toronto.

He was originally connected with the New Connexion Methodist body, but joined the Wesleyan Conference in 1867, and was an ardent advocate of union.

[2] Withrow was the author of The catacombs of Rome and their testimony relative to primitive Christianity (1874), History of the Dominion of Canada and Our Own Country: Picturesque and Descriptive.

He is also author of a number of smaller volumes, among which are Valeria, the Martyr of the Catacombs : A Tale of Early Christian Life in Rome, Neville Trueman, the Pioneer Preacher, The King's Messenger, and The Romance of Missions.