Tilden Study Center is an educational, non-profit corporation dedicated to the intellectual, cultural, and spiritual development of students and professional men. The Christian orientation of its programs is entrusted to Opus Dei, a Prelature of the Catholic Church.

Tilden began operations in 1986 at its Westwood location close to the UCLA campus. The center is financed by activity fees as well as personal and corporate donations. College programs are open to undergraduate men from any Los Angeles area university.