Stelios Haji-Ioannou was born in Athens on 14 February 1967, the second of three children of Nedi (née Potsos) and Loucas Haji-Ioannou. He has an elder brother, Polys, and a younger sister, Clelia. Both of his siblings have a large stake in easyJet. His father's family originates from the village of Pedoulas high in the Troodos Mountains of Cyprus, while his mother is from the village of Laneia at the foot of the mountains. After his secondary education in Athens, he studied Economics at the London School of Economics, graduating with a BSc in 1987. He went on to obtain an MSc in Shipping, Trade & Finance from Cass Business School. He was later awarded four honorary doctorates from Cass Business School, Liverpool John Moores University, Newcastle Business School, and Cranfield University.