John Chamberlain Ward (May 25, 1857 – April 20, 1929) was an American prelate of the Roman Catholic Church. He served as Bishop of Leavenworth from 1911 until his death in 1929.
The second of three children, John Ward was born in West View, Cuyahoga County, Ohio, to Joseph and Ellen (née McGrath) Ward, who were both natives of County Westmeath, Ireland, and came to the United States in the 1850s. He attended the parochial school in Olmsted and high school in Berea. He continued his classical studies at St. Mary's College in Cincinnati and at Assumption College in Ontario, Canada. Returning to the United States, he studied philosophy and theology at St. Meinrad's Seminary in Spencer County, Indiana.
Ward was ordained to the priesthood by Bishop Louis Mary Fink, O.S.B., on July 17, 1884. After serving as a curate at the cathedral of Leavenworth, Kansas for three months, he was named pastor of St. Joseph's Church in Marshall County. He was transferred to St. Patrick's Church in Parsons in 1888, and to St. Thomas' Church at Armourdale in 1895. From 1898 to 1909, he was rector of Leavenworth Cathedral. He was then sent to Kansas City as pastor of St. Mary's Church.