Arthur Wallis is one of several leaders who pioneered what is known as the "house church movement" in Great Britain.

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Jim Wallis is a Christian writer and political activist. He is best known as the founder and editor of Sojourners magazine and as the founder of the Washington, D.C.–based Christian community of the same name.

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Michael Wallis is the author of the bestseller Route 66 and the highly acclaimed Pretty Boy.

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David J. Wallin is a clinical psychologist in private practice in Albany, California. He has been practicing, teaching, and writing about psychotherapy for more than three decades. Dr. Wallin is coauthor (with Stephen Goldbart) of Mapping the Terrain of the Heart: Passion, Tenderness, and the Capacity to Love.

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Douglas Waller is a former correspondent for Newsweek and Time and the author of Wild Bill Donovan, The Commandos, and Big Red.

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Hilary Waller, LPC, is the director of programming at The Postpartum Stress Center. She provides continuing education for maternal health care providers in the identification and treatment of perinatal mood and anxiety disorders and leads advanced trainings for professionals from around the country.

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Gregory Wallance is a lawyer and writer in New York City. He is the author of Papa's Game, which received a nonfiction nomination for an Edgar Allan Poe Award; America's Soul in the Balance, The Woman Who Fought an Empire, and Two Men Before the Storm. He is a contributor for The Hill.

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Tim Wallace-Murphy (1930–2019) studied medicine at University College, Dublin, and then qualified as a psychologist; he then became an author, lecturer, and historian. He has written more than a dozen books, including The Mark of the Beast, Rex Deus, and Rosslyn: Guardian of the Secrets of the Holy Grail.

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Jeremy L. Wallace is an associate professor of government at Cornell University. He studies authoritarian politics focusing on China, cities, statistics, and climate change.

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B. Alan Wallace has authored, translated, edited, and contributed to more than forty books on Tibetan Buddhism, science, and culture. With fourteen years as a Buddhist monk, he earned a BA in physics and the philosophy of science and then a PhD in religious studies.

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