Ketty Diridaoua (; 1921 – February 9, 1996) was a Greek actress and singer. In 1955 she married actor Kostas Hatzichristos. They had a daughter and divorced in 1975.
She was born Aikaterini Oikonomou (ÃÂùúñÃÂõÃÂïý÷ ÃÂùúÿýÃÂüÿà). The name Diridaoua was a pseudonym that originates from the city Dire Dawa in Ethiopia. She died on February 9, 1996, at the age of 75.