Clelia Haji-Ioannou is a British billionaire of Greek-Cypriot descent who has a net worth of $1.06 billion in May 2016 according to Forbes.

Haji-Ioannou shares a stake on her brother, Stelios' low budget airline, EasyJet. Along with her sibling, Polys who sold their shares during the conflict between Stelios and its management, she still earned from the company. She currently sits on the board of the Cyprus Marine Environment Protection Association.

Clelia Haji-Ioannou was born in Athens, Greece.