John Witvliet is the director of the Calvin Institute of Christian Worship and a professor of worship, theology, and congregational and ministry studies at Calvin College and Calvin Theological Seminary. 

His teaches courses at both the college and seminary and oversees CICW’s practical and scholarly programs, including the Calvin Symposium on Worship and the Vital Worship Grants Program. 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, choral and congregational song and consulting with churches on worship renewal