Tom Fontana is an American screenwriter, writer, and television producer. Fontana worked on NBC's Homicide: Life on the Street and created HBO's Oz.

Homicide: Life on the Street is an American police drama television series chronicling the work of a fictional version of the Baltimore Police Department's Homicide Unit. Created by Paul Attanasio, it ran for seven seasons and 122 episodes on NBC from January 31, 1993, to May 21, 1999, and was succeeded by Homicide: The Movie (2000), which served as the series finale. The series was created by Paul Attanasio and based on David Simon's book Homicide: A Year on the Killing Streets (1991). Many of the characters and stories used throughout the show were based on events depicted in the book.