Conrad Moffat Black, Baron Black of Crossharbour, is a Canadian-born British former newspaper publisher, media magnate, historian, and former politician. Born into a wealthy family in Montreal, Quebec, he inherited and expanded his father's business interests beginning with acquisitions of small Canadian newspapers in the 1970s. In 1978, he founded Hollinger Inc. (later Hollinger International), which grew into one of the world's largest newspaper publishers, controlling over 60% of Canadian newspaper circulation at its peak. His holdings included major titles such as the Chicago Sun-Times, the Jerusalem Post, and the Daily Telegraph in London, which he acquired in 1985 and transformed into a prominent conservative voice.

Black was knighted by the British government in 2001, becoming Lord Black of Crossharbour, though this title was not recognized in Canada due to constitutional restrictions on hereditary peerages. His career was marked by aggressive expansion and controversial business practices, which ultimately led to his ousting from Hollinger in 2004 amid allegations of financial misconduct. In 2007, as former CEO of Hollinger International, he was convicted in the United States of mail fraud and obstruction of justice related to diverting millions of company funds for personal use. He was sentenced to 6.5 years in prison and served 42 months before his conviction was partially vacated on appeal in 2010. In 2019, he was fully pardoned by U.S. President Donald Trump. The scandal dismantled his media empire and tarnished his reputation, though Black has maintained his innocence, characterizing the trial as a politically motivated witch hunt.

After his incarceration, Black reinvented himself as a prolific author, writing biographies of Franklin D. Roosevelt, Richard Nixon, and Donald Trump, as well as his own memoir. He remains active in conservative commentary, contributing to outlets such as the National Post, which he formerly owned. Politically, he served briefly as a director for the Progressive Conservative Party in Canada and has supported right-wing causes in both Canada and the UK. His personal life includes marriages to Australian-born Joanna Black and, since 1992, to British journalist Barbara Amiel, with whom he shares a high-profile social circle.