Siney Lumet (born June 25, 1924) is an Academy Award-winning American film director, with over 50 films to his name, including the critically acclaimed 12 Angry Men (1957), Serpico (1973), Dog Day Afternoon (1975), Network (1976) and The Verdict (1982), all of which earned him Academy Award nominations for Best Director. He won an Academy Award for Lifetime Achievement in 2005, for his "brilliant services to screenwriters, performers, and the art of the motion picture".