Conrad Moffat Black, Baron Black of Crossharbour, PC, OC, KCSG (born 25 August 1944, in Montreal, Quebec) is a Canadian-born British historian, columnist and publisher who was for a time the third biggest newspaper magnate in the world. He is currently incarcerated at the Coleman Federal Correctional Complex in Florida, awaiting a hearing by the U.S. Supreme Court of his appeal of his fraud conviction.

Before investigation by regulators and investors, Black controlled Hollinger International, Inc. Through affiliates, the company published major newspapers including The Daily Telegraph (UK), Chicago Sun Times (USA), Jerusalem Post (Israel), National Post (Canada), and hundreds of community newspapers in North America.

In 2003, following investor complaints, Hollinger International reported to the United States Securities and Exchange Commission (SEC) about misconduct at the company, including violations of fiduciary obligations by officers. The report accused Black and close colleagues of running a "corporate kleptocracy." Black resigned under pressure as CEO of Hollinger International. He was subsequently charged with mail and wire fraud and obstruction of justice.