Tonia Marketaki (Greek: Τώνια Μαρκετάκη; 28 July 1942 – 26 July 1994) was a Greek film director and screenwriter. She was born in Pireas and spend many of her childhood years in the Zografou district of Athens. Her maternal origins are from Kardamyla, in the island of Chios. In 1971 she again returned to her home-country. Apart from her three full-length films, she also directed a number of theatrical plays and a television series called Lemonodasos. Her final film Krystallines nyhtes was screened in the Un Certain Regard section at the 1992 Cannes Film Festival.