Professor Kelman's research focuses on the forms and practices of religious knowledge transmission. He holds a specific research interest in American Jewry.

He is the author of Shout to the Lord: Making Worship Music in Evangelical America (NYU 2018) and Station Identification: A Cultural History of Yiddish Radio (California, 2009). He is also the co-editor (with Jon Levisohn) of Beyond Jewish Identity (2019: Academic Studies Press), the editor of Is Diss a System?: A Milt Gross Comic Reader (NYU, 2010), co-author of Sacred Strategies: Transforming Synagogues from Functional to Visionary (Alban Institute, 2011). Together with research partners at Stanford and elsewhere, he maintains an active research agenda and publishes regularly in venues both scholarly and popular.