Guillermo Battaglia (December 7, 1899 – September 26, 1988) was a prolific Argentine film actor of the classic era of Argentine cinema. Born in Buenos Aires, he began his film career in 1937 in Melodías porteñas. Battaglia starred in over 100 films between then and 1987. He was one of the most prolific supporting actors during this entire period, notably in Roberto Cossa's La nona (1979), David Lipszyc's Volver (1982), Alberto Fischerman's Los días de junio (1985), and the Best foreign film oscar-winning The Official Story in 1985. He died of a heart attack in September 1988. He was married to Argentine actress Nora Cullen.