Hal Douglas is an American voice actor best known for his work on movie trailers and television commercials.
Douglas is known in the film industry as the "In a world …" guy because many of his trailers have begun with these words, and his voice has immortalized them (although Don LaFontaine claims to have actually created the catchphrase). In addition, Douglas has been the promotional voice for the former WB, A&E and The History Channel. As of 2007, Douglas records promotional narrations for ABC along with theatrical trailers, but no longer does voice overs for the CW, the merger of The WB and UPN. His voice can also be heard as the "trailer announcer" in the 2006 movie, The Holiday. He can be seen parodying himself in the trailer for Jerry Seinfeld's film Comedian.