[<< wikipedia] Viertel (surname)
Viertel is a surname. Notable people with the surname include:

Elisabeth Neumann-Viertel (April 5, 1900 – December 24, 1994), an Austrian actress
Berthold Viertel (28 June 1885 – 24 September 1953), an Austria screenwriter and film director
Joel Viertel, director of the 2008 comedy film Strictly Sexual
Peter Viertel (November 16, 1920 – November 4, 2007), an American author and screenwriter
Salka Viertel (15 June 1889 – 20 October 1978), an actress and screenwriter