In authoritarian regimes, repression encourages private actors to censor not only themselves, but also other private actors—a behavior we call “regime-induced private censorship.” We present the results of a correspondence experiment conducted in Russia that investigates the censorship behavior of private media firms. We find that such firms censor third-party advertisements that include anti-regime language, calls for political or non-political collective action, or both. Our results demonstrate the significance of other types of censorship besides state censorship in an important authoritarian regime and contribute to the rapidly growing literature on authoritarian information control.