Ozualdo Ribeiro Candeias (1918 – 2007) was a Brazilian screenwriter, editor, photographer, director of photography, actor, producer and filmmaker.

Candeias is believed to have been born in 1918, but was only registered in the town of Cajobi, in the state of São Paulo, in 1922. He worked in a number of jobs, from aeronautics sergent to truck driver. A self-taught filmmaker, he released his debut feature "A Margem" in 1967, a starting point for the Cinema Marginal movement (also dubbed Cinema de Invenção), which would forever change paradigms in the history of Brazilian cinema. Longing for distribution company for it, he turned to the Boca do Lixo, a block in downton São Paulo then known as a stronghold to independant filmmakers. A passionate advocate for the Boca, he paid homages to it in both short and feature films.