William Marvel is the author of Lincoln's Darkest Year, Mr. Lincoln Goes to War, Lee's Last Retreat, Andersonville, and several other acclaimed books on the Civil War. He has won a Lincoln Prize, the Douglas Southall Freeman Award, and the Bell Award.

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Paula Marvelly is an author, filmmaker, creator and editor of the Culturium, which is a blog and newsletter that explores the way in which mystical spirituality manifests through the cultural arts. She is the author of two nonfiction books and an artistic filmmaker.

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Carolyn Marvin is a professor and author that specializes in communication, culture, political communication, and technology and society. Marvin is the Frances Yates Emeritus Professor of Communication at the University of Pennsylvania. Marvin is the author of several books, including When Old Technologies Were New.

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Alex Marwood is the pseudonym of a journalist who has worked extensively across the British press. Her first novel, The Wicked Girls, won the Edgar Award for Best Paperback Original. The Killer Next Door, her second novel, won a Macavity Award for Best Mystery Novel.

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Karl Marx (1818–1883) was a German philosopher and political theorist best-known as the author, with Friedrich Engels, of The Communist Manifesto.

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Kate L. Mary is an award-winning author of adult, new adult, and young adult fiction, ranging from post-apocalyptic tales of the undead to speculative fiction and contemporary romance. Her books include When We Were Human, Outliers, Tribe of Daughters and the Broken World series. Visit her at katelmary.com.

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John M. Marzluff is professor of environmental and forest sciences at the University of Washington and is the author or coauthor of several books, including In the Company of Crows and Ravens, Dog Days, Raven Nights, and Welcome to Subirdia. He lives in Snohomish, Washington.

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John M. Marzluff is professor of environmental and forest sciences at the University of Washington and is the author or coauthor of several books, including In the Company of Crows and Ravens, Dog Days, Raven Nights, and Welcome to Subirdia. He lives in Snohomish, Washington.

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Clay Marzo is a professional surfer, widely regarded as one of the best in the world. Also a YouTube sensation, he has won numerous surfing competitions and was the subject of the popular surfing film Just Add Water. Marzo works extensively with Surfers Healing, a charity for autistic youth.

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Gerald Marzorati was the editor of the New York Times Magazine from 2003–2010. He previously worked as an editor at the Soho News, Harper's magazine, and the New Yorker. He is also the author of A Painter of Darkness, which won the PEN/Martha Albrand Award for a first book of nonfiction.

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Nur Masalha is a Palestinian academic and historian and former director of the Centre for Religion and History at St. Mary's University, London. He is the editor of Journal of Holy Land and Palestine Studies, published by Edinburgh University Press. He is also the author and editor of numerous books on Palestine.

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David Masciotra is the author of six books, including I Am Somebody: Why Jesse Jackson Matters and Mellencamp: American Troubadour. A journalist, political analyst, and arts critic, he has written for the New Republic, Salon, Progressive, Washington Monthly, No Depression, CounterPunch, and CrimeReads, among many others.

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