Margaret O'Brien (born January 15, 1937) is an American film and stage actress. Although her film career as a leading character was brief, she was one of the most popular child actors in cinema history. In her later career, she appeared on stage and in supporting film roles.

She was born Angela Maxine O'Brien; (she later changed her name to Margaret following the success of the film Journey for Margaret, in which she played the title role). Her father Lawrence O'Brien, a circus performer, died before she was born.[1]; Margaret's mother, Gladys Flores, was a well-known flamenco dancer who often performed with her sister Marissa, also a dancer. Margaret is of half-Irish and half-Spanish ancestry.