Gary Robert Habermas (born 1950) is an American evangelical Christian apologist, historian, and philosopher of religion. He is a renowned and prolific author, lecturer, and debater on the topic of the Resurrection of Jesus.
Habermas is Distinguished Professor of Apologetics and Philosophy and chairman of the department of philosophy and theology at Liberty University in Lynchburg, Virginia. He holds a Ph.D. (1976) from Michigan State University in the area of History and Philosophy of Religion and an M.A. (1973) from the University of Detroit in Philosophical Theology. He has specialized in cataloging and communicating trends among scholars in the field of historical Jesus and New Testament studies. Habermas has authored or co-authored 35 books on religious and philosophical subjects, contributed to over 60 chapters or articles in books, and published over 100 articles and reviews in peer-reviewed journals. He continues to do research, publish popular and academic papers, give debates, and he frequently appears on television.
In 1985, Dr. Gary Habermas and Antony Flew debated the question of Jesus' resurrection as a literal and historical/physical event, before a crowd of 3000 people. Five philosophers and five professional debate judges judged the debate. Of the philosophers who judged on the content of the debate, four voted that Habermas won and the other was undecided. Of the debate judges who voted on debate technique, three voted for Habermas while two voted for Flew. The debate was published as a book under the title Did Jesus Rise from the Dead? The Resurrection Debate (Harper & Row).
In 2004, Habermas conducted an interview with Antony Flew published in Biola University's Philosophia Christi journal, in which Flew reversed his long-standing espousal of atheism by endorsing deistic theism. The interview has been the source of some minor controversy, centering on claims made in the interview's preface regarding the scope and nature of Flew's beliefs, and his subsequent contradictory statements endorsing atheism, the latter being a misnomer, for Flew clearly no longer supports the inference or verdict of atheism, but rather the evidential method or route by which one may secure such a verdict, i.e., the "Presumption of Atheism" is default, nullified only on the condition that the degree of proof is met. 
Habermas was married to Debbie for 23 years until her death from cancer in 1995. He then remarried Eileen. Between them they have seven children and eleven grandchildren.
- Why is God Ignoring Me? (Tyndale House Publishers, 2010).
- A Conversation with Gary Habermas and Antony Flew: Did the Resurrection Happen? (InterVarsity Press, 2009).
- with John Thomas What's so God about Feeling Bad?, (Tyndale, 2008).
- with Jerry Walls & David Baggett C.S. Lewis as Philosopher, (InterVarsity, 2008).
- Resurrected? : An Atheist and Theist Dialogue, (Rowman & Littlefield, 2005).
- with Licona, Michael The Case for the Resurrection of Jesus, (Kregel, 2004).
- with Moreland, J.P. Beyond Death: Exploring the Evidence for Immortality, (Crossway, 2004).
- The Risen Jesus & Future Hope, (Rowman & Littlefield, 2003).
- The Thomas Factor: Using Your Doubts to Draw Closer to God (Broadman & Holman, 1999).
- The Historical Jesus: Ancient Evidence for the Life of Christ (College Press: Joplin, MI 1996).
- Ancient Evidence for the Life of Jesus: Historical Records of His Death and Resurrection
- Dealing With Doubt (Moody Press, 1990)
- Gary R. Habermas and Antony G. N. Flew, Did Jesus Rise from the Dead? The Resurrection Debate, ed. Terry L. Miethe (San Francisco: Harper & Row, 1987; Eugene, OR: Wipf and Stock, 2003).
- Gary Habermas — personal website
- Gary Habermas on Theopedia
- Why I Believe The New Testament Is Historically Reliable by Dr. Gary Habermas
- Explaining Away Jesus’ Resurrection: The Recent Revival of Hallucination Theories by Gary R. Habermas
- Jesus' Resurrection and Contemporary Criticism: An Apologetic (Part I) - PDF File
- Jesus' Resurrection and Contemporary Criticism: An Apologetic (Part II) - PDF File