Thomas Dekker is a Dutch former professional cyclist whose talent quickly took him to the top of the sport. He raced for the Netherlands in the 2004 Summer Olympic Games in Athens, won two Dutch National Time Trial Championships, and captured victories in the 2006 Tirreno-Adriatico and the 2007 Tour of Romandie.

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Ted Dekker is the New York Times bestselling author of more than twenty novels, including BoneMan's Daughters, Thr3e, and the Circle series.

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Scott M. Deitche is the author of seven books on organized crime, including Cigar City Mafia: A Complete History of the Tampa Underworld, The Silent Don: The World of Santo Trafficante Jr., and Cocktail Noir: From Gangsters and Gin Joints to Gumshoes and Gimlets. He has also written dozens of articles on organized crime.

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David Deida is acknowledged as one of the most insightful and provocative teachers of our time. His workshops on a radically practical spirituality have been hailed as among the most original and authentic contributions to the field of self-development currently available.

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Walker Deibel holds an MBA from the Olin School of Business at Washington University in St. Louis, where he received the Declaration of Accomplishment in Entrepreneurship Award from the Skandalaris Center of Innovation and Entrepreneurship. Visit him at buythenbuild.com.

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Robyn DeHart is an award-winning author as well as being a four-time RT Bookclub Reviewers' Choice award nominee and a three-time RomCon Reader's Crown nominee. Publishers' Weekly claims her writing to be "comical and sexy" while the Chicago Tribune dubs her "wonderfully entertaining."

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Stanislas Dehaene is the director of the Cognitive Neuroimaging Unit in Saclay, France, and the author of Reading in the Brain.

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David DeGrazia has served on the faculty of George Washington University since 1989. He has been a dedicated teacher, a prolific scholar with publications in a wide range of topics in philosophy and bioethics, and Department Chair for one term. He lives with his wife and daughter in Silver Spring, Maryland.

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Tom DeGeorge is a former CIA officer, retired from the Directorate of Digital Innovation (DDI). That's as deep as he'll go on a resume. Or here. He writes spy thrillers out of respect and envy for case officers, and everyone else in the DO (Directorate of Operations). He lives in an old fishing village in North Carolina.

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Daniel Defoe (1660–1731), English novelist, pamphleteer, and journalist, is considered the founder of the English novel and is most famous as the author of Robinson Crusoe .

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Kenneth S. Deffeyes, a former researcher for Shell Oil Company, is an emeritus professor of geology at Princeton University and the author of Beyond Oil and Hubbert's Peak.

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Courtney DeFeo is a popular blogger and the creator of ABC Scripture Cards, which are sold nationwide. A graduate of Auburn University, she has a background in marketing and public relations and has worked for Ketchum Public Relations and Chick-fil-A. Courtney and her husband, Ron, are the parents of two young girls. Visit her at courtneydefeo.com.

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