Frank Black is a fictional character in the crime-thriller television series Millennium. Black serves as the primary character of the series, which centers on his investigation into unusual crimes as part of the private investigative organization the Millennium Group. Black appeared in all but one of the series' sixty-seven episodes, with "Anamnesis" being the exception; the character was portrayed by Lance Henriksen throughout the series.

Lance Henriksen is an American actor. He is known for his works in various science fiction, action and horror films, such as that of Bishop in the Alien film franchise, and Frank Black in Fox television series Millennium (1996–1999) and The X-Files (1999). He has also done extensive voice work, as Kerchak the gorilla in the 1999 Disney film Tarzan (1999), General Shepherd in Call of Duty: Modern Warfare 2 (2009) and Fleet Admiral Steven Hackett in BioWare's Mass Effect video game trilogy (2007–2012). He also appeared as Hal Vukovich in The Terminator (1984), Ed Harley in the cult horror film Pumpkinhead (1988), Chains Cooper in Stone Cold (1991), and Emil Fouchon in Hard Target (1993).