Beba Loncar launched her acting career at the tender age of 17. Loncar found her beginnings in film with roles in the Dusica Zegarac drama "The Ninth Circle" (1960), "The Long Ships" (1964) and "Casanova '70" (1965) with Marcello Mastroianni. Loncar then began to rack up a number of film credits, including roles in the Virna Lisi comedy "The Birds, the Bees, and the Italians" (1966), the comedy adaptation "Some Girls Do" (1969) with Richard Johnson and the comedy "Brancaleone Alle Crociate" (1970) with Vittorio Gassman. She also appeared in "Pussycat, Pussycat, I Love You" (1970), "Decameron N. 3--Le Piu Belle Donne del Boccaccio" (1971) and "Drugarcine" (1979). Later in her career, Loncar acted in the Lino Ventura comedy "Sunday Lovers" (1981).