Thomas Jonathan Jackson Altizer (b. September 28, 1927) is a radical theologian who is known for incorporating Friedrich Nietzsche's conception of the "death of God" and G. W. F. Hegel's dialectical philosophy into his systematic theology.
Altizer was born in Cambridge, Massachusetts on May 28, 1927 and grew up with two sisters. He attended St. John's College in Annapolis, Maryland and the University of Chicago, from which he received his Bachelors, Masters and Doctorate. His 1951 master's thesis examined the concepts of nature and grace in St. Augustine. His doctoral dissertation in 1955, under the direction of sociologist of religion Joachim Wach, examined Carl Gustav Jung's understanding of religion.
He was assistant professor of religion at Wabash College in Crawfordsville, Indiana, from 1954 to 1956. He went on to become an associate professor of Bible and religion at Emory University from 1956 to 1968. He was professor of Religious Studies at the Stony Brook University from 1968 to 1996. He is currently Professor Emeritus of Religious Studies at the university.
During Altizer's time at Emory, two Time magazine articles featured his religious views—in the October 1965 and April 1966 issues. The latter issue, published at Easter time, put the question on its cover in bold red letters on a plain black background: "Is God Dead?"