Unfreedom of the Press is a 2019 book authored by Mark R. Levin, a prominent conservative commentator, radio host, and former president of the Landmark Legal Foundation. The book critiques what Levin perceives as the mainstream media's bias, partisanship, and suppression of conservative viewpoints, arguing that the press has deviated from its role as an impartial watchdog to become a tool for advancing left-wing agendas. Levin draws on historical examples, legal precedents, and contemporary media coverage to support his thesis, positioning the book as a defense of First Amendment principles while accusing media outlets of 'unfreedom' through selective reporting and ideological conformity. Published by Threshold Editions, an imprint of Simon & Schuster, the book became a New York Times bestseller, reflecting Levin's influence in conservative circles and sparking debates on media ethics and objectivity.

The publication emerged amid heightened political polarization in the United States, particularly during the Trump administration, where Levin leverages his platform to amplify criticisms of outlets like CNN, The New York Times, and The Washington Post. It builds on Levin's prior works, such as 'Liberty and Tyranny' (2009), by focusing specifically on media dynamics, and includes calls for reforms to restore journalistic integrity. While praised by conservatives for exposing perceived hypocrisies, the book has been criticized by liberals and media scholars for its polemical tone, selective evidence, and oversimplification of complex issues, with some reviewers accusing it of promoting conspiracy-like narratives about media collusion.