Putri Maria-Olympia dari Yunani

Selain itu, Putri Maria-Olympia juga memiliki empat adik yaitu Pangeran Konstantinus Alexios (b. 1998), Pangeran Achileas-Andreas (b. 2000), Pangeran Odysseas-Kimon (b. 2004) dan Pangeran Aristides-Stavros (b. 2008).