Donald Alfred Hagner is an American theologian, currently the George Eldon Ladd Professor Emeritus at Fuller Theological Seminary.
While at Northwestern, Hagner studied tuba under Arnold Jacobs and performed in the Chicago Symphony Orchestra under Fritz Reiner.
In 1969 he joined the faculty at Wheaton College in Illinois, where he remained until accepting a post at Fuller Seminary in 1976.
In 2014-15 he was Visiting Griset Chair in Bible and Christian Tradition at Chapman University in Orange, California.
In November, 2017, a Festschrift, Treasures New and Old: Essays in Honor of Donald A. Hagner, was presented to him at the Institute of Biblical Research plenary meeting in Boston, Massachusetts.