Jon M. Sweeney is an independent scholar and award-winning author. His books have been translated into many languages. He's a popular interpreter of the life and work of Francis of Assisi, and author of more than 40 books including St. Francis of Assisi with a foreword by Richard Rohr, and The Complete Francis of Assisi used by Third Order Franciscans. HBO optioned the film rights to Sweeney's book on the medieval Pope Celestine V, The Pope Who Quit.

In 2023, Jon published Sit in the Sun: And Other Lessons in the Spiritual Wisdom of Cats, and Meister Eckhart's Book of Darkness and Light, coauthored with Mark S. Burrows. Jon has been interviewed on CBS News, WGN-TV, Fox News, and CBS Saturday Morning, and by publications online from CNN to Romper. He's a practicing Catholic who also prays regularly with his wife, a congregational rabbi. He loves the church, the synagogue, and other aspects of organized religion. He would never say he's "spiritual but not religious." He is the father of four and lives in Milwaukee, Wisconsin. Sweeney is codirector of The Lux Center for Catholic-Jewish Studies at Sacred Heart Seminary; religion editor at Monkfish Book Publishing; editor of Living City magazine; and contributing editor for books at SpiritualityandPractice.com.