Giuseppe Addobbati (31 December 1909 – 4 January 1986) was an Italian film actor known for his roles in Spaghetti Western and action films in the 1960s and 1970s. He was often billed as John MacDouglas for films released to an American audience.

Addobbati was born in Makarska and later lived in Trieste. He made over 80 film appearances between 1937 and 1980 often as a police officer or law enforcer. He starred in films such as The Phantom of the Opera (1964), Blood For A Silver Dollar alongside Giuliano Gemma (Montgomery Wood) and in The Conformist (1970).