Twenty-First Century Fox, Inc., which did business as 21st Century Fox (21CF), also known simply as Fox, was an American multinational mass media and entertainment conglomerate based in Midtown Manhattan, New York City. It was one of the two companies formed on June 28, 2013, following a spin-off of the publishing assets of the old News Corporation as News Corp.

The original incarnation of News Corporation was an American multinational mass media corporation controlled by media mogul Rupert Murdoch and headquartered at 1211 Avenue of the Americas in New York City. Prior to its split in 2013, it was the world's largest media company in terms of total assets and the world's fourth largest media group in terms of revenue. It had become a media powerhouse since its inception, dominating the news, television, film, and print industries.