Olga Karlatos (Greek: Όλγα Καρλάτου; born 20 April 1947) is a Greek actress known primarily for performing in Italian horror cinema.

Olga Fedori (born 17 March 1984) is a Ukrainian-born actress, who works in English language films and programmes. She is best known for playing Frieda Petrenko in the BBC medical drama Holby City, from 2010 to 2012.