Elpida Hadjidaki (Greek: Ελπίδα Χατζηδάκι) is a Greek marine archaeologist specializing in ancient shipwrecks. She grew up in coastal Chania and was interested in maritime history from an early age. Hadjidaki learned to dive shortly after finishing high school. She has investigated multiple archaeological sites, including the Alonnisos shipwreck, a Minoan shipwreck near Pseira, and the ancient harbor town of Phalasarna. She was friends with Honor Frost, a now deceased diver and underwater archaeologist.