Chryss Goulandris, Lady O'Reilly (born 27 June 1950), also known as Christina or Chryssanthie, is one of the richest women associated with Ireland, and holds both USA and Greek citizenship. For many years, she owned a major horse breeding operation located in Ireland, France and other countries and was Chairperson of the Irish National Stud for over a decade. She is the wife of former media and industrial magnate Tony O'Reilly, and is heavily involved with The Ireland Funds.