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Dr. Douglas Groothuis has fire in his bones for the Christian message and many irons in the fire to explain, defend, and apply it. He has been explaining the world to the church and explaining the church to the world for nearly fifty years through his teaching, preaching, writing, mentoring, and general witness. His passion is to take to the streets the truth and significance of the Christian worldview for all of life. To that end, he publishes both academic and popular works, preaches in churches, gives public lectures, engages in debates, and has appeared on hundreds of radio programs and podcasts since 1983. He is known as a knowledgeable, sharp, forceful, but gentle communicator of the Christian message.  

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Dr. Groothuis holds a Ph.D. in Philosophy (University of Oregon, 1993) and is Professor of Philosophy at Denver Seminary where he heads the Christian Apologetics Master’s degree program. He is the author of sixteen books, beginning with the best-selling Unmasking the New Age (InterVarsity Press, 1986) and including the popular and voluminous textbook, Christian Apologetics, 2nd ed. (IVP Academic, 2022), as well as a memoir, Walking Through Twilight: A Wife’s Illness—a Philosopher’s Lament (InterVarsity Press, 2017), an introduction to philosophy, Philosophy in Seven Sentences (InterVarsity, 2016), and a book on the controversial topic of Critical Race Theory, Fire in the Streets (Salem Books, 2022). He co-authored the introductory textbook on apologetics, The Knowledge of God in the World and in the Word (Zondervan-Academic, 2022) with Andrew Shepardson.


He has also published over thirty academic articles in journals such as Academic Questions and Philosophia Christi as well as dozens of pieces in publications such as The Chronicle of Higher Education and The Christian Research Journal. His encouragement to pastors appears regularly at "The Focused Pastor" on the Focus on the Family online portal and he writes about jazz at the All About Jazz website.



Dr. Groothuis is a gifted communicator who has the ability to challenge scholars at the highest levels of academia while remaining accessible to those less academically inclined. He has spoken and preached about a wide range of topics, and with rapid changes in culture and politics, that range expands every year. Some of his strongest subjects include theistic arguments, attacks on Christianity (New Atheism and similar movements), non-Christian spiritualities, cultural and social criticism, comparative religion, C.S. Lewis, Blaise Pascal, ethics, philosophy of technology, political philosophy, philosophy of jazz, and aesthetics. 

Build up Your Church or Organization through the Ministry of Philosopher and Apologist, Douglas Groothuis, Ph.D. (PDF)


'Doug Groothius has done more than most philosophers in the past three decades to bring real wisdom into people’s lives. He will enliven your group with the insights of the ages on issues that matter now. Highly recommended!'


Author of True Success, If Aristotle Ran General Motors, The Oasis Within, and many other books.


If you would like to have Dr. Groothuis speak at your conference or event, please visit our contact page.

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