Born in Savona, the son of the actor and voice actor Lauro Gazzolo and EIAR radio announcer Aida Ottaviani Piccolo, Gazzolo debuted at young age on radio, and in 1948, at twenty years old, he started his acting career entering the stage company led by Antonio Gandusio.

[1] He achieved his first personal success in 1951, in the adaptation of Antonio e Cleopatra staged by Renzo Ricci.

[1] He later worked on stage with Vittorio Gassman and Luigi Squarzina, among others, before focusing on voice acting and dubbing.

[1][2] Gazzolo was also active in films and starred in several TV-series of good success.

Other actors he occasionally dubbed included Rex Harrison, Michael Caine, Frank Sinatra, Yul Brynner, Marlon Brando, Robert Duvall, Donald Sutherland, Laurence Olivier, Clint Eastwood, Louis Jourdan, Henry Fonda and was also the voice of the narrator in the Italian dubbed version of Beauty and the Beast.