Christian Gerard Appy (born April 5, 1955) is a professor of history at the University of Massachusetts Amherst.

At Amherst College, class of 1977, he majored in American Studies and wrote a prize-winning honors thesis on Appalachian coal miners.

Appy taught at Harvard and MIT before accepting a position in the history department at the University of Massachusetts Amherst in 2004.

[3] Appy is now working on a book about Daniel Ellsberg, the whistleblower who, in 1971, released to the press a 7000-page secret history of the Vietnam War—the Pentagon Papers—that exposed decades of official lies about the causes and conduct of the war.

In 2020-21, Appy helped organize a series of events to mark the 50th anniversary of the Pentagon Papers’ release—a year-long seminar, the creation of a website (the Ellsberg Archive Project), a series of podcasts by The GroundTruth Project, and a two-day online conference with more than two-dozen high profile scholars, journalists, former policymakers, whistleblowers, and activists.