The William James Lectures are a series of invited lectureships at Harvard University sponsored by the Departments of Philosophy and Psychology, who alternate in the selection of speakers. The series was created in honor of the American pragmatist philosopher and psychologist William James, a former faculty member at that institution. It was endowed through a 1929 bequest from Edgar Pierce, a Harvard Alumnus, who also funded the prestigious Edgar Pierce Chair in Philosophy and Psychology. Pierce stipulated that the delivered lectures be open to the public and subsequently published by the Harvard University Press. The program was initiated in 1930 and has continued to the present. Its invited lecturers have included some of the most influential thinkers of the 20th century. In some cases, the selection of lecturer has generated considerable controversy. It is not to be confused with the William James Lectures on Religious Experience, which is a different lecture series conducted in the Harvard Divinity School.

Chronological list of invited lectureships

Published versions of the lectures