The theme song "Keep Your Eye On The Sparrow" was initially instrumental. In later seasons, lyrics were added that were sung by Sammy Davis, Jr.
Baretta had a pet white Cockatoo named Fred. One of Fred's favorite lines was "Abandon ship! Abandon ship!"
This show was originally intended as a continuation of the television series Toma (1973), with Robert Blake replacing Tony Musante as Detective David Toma. When Blake balked at taking over an established role, a new series was created for him instead.
Baretta's car was a 1966 Chevy Impala.
After personal conflict with Robert Blake on the set, Dana Elcar was replaced by Edward Grover when the series returned for its second season.