John D. Witvliet is director of the Calvin Institute of Christian Worship and professor of music and worship at Calvin College and Calvin Theological Seminary, respectively. He also teaches in the religion department at Calvin College. His areas of interest include the history of Christian worship, worship practices in various denominations, biblical and systematic theology of worship, the role of music and the arts in worship, and consulting with churches on worship renewal.

He is married to Charlotte van Oyen Witvliet, a professor of psychology at Hope College. They are parents of four very active children, Sheila Grace, Kate, Madeline, and Luke.