Cyril James Cusack (26 November 1910 – 7 October 1993) was an Irish actor, who appeared in numerous films and television productions in a career lasting more than 70 years.

Cusack was born in Durban, Natal, South Africa. His mother, Alice Violet (née Cole), was an English Cockney actress and chorus girl, and his father, James Walter Cusack, was Irish and a sergeant in the Natal mounted police.