List of Famous people named Ilona

Ilona Staller, widely known by her stage name Cicciolina, is a Hungarian-Italian former porn star, politician, and singer.

Ilona Mitrecey, more commonly known as Ilona, is a French singer.

Ilona Szabó de Carvalho is a Brazilian political scientist and civic entrepreneur, co-founder and executive director of the Igarapé Institute. Since its founding in 2011, the Institute has developed pioneering research, new technologies and policy on the intersections of security, climate and development. With headquarters in Rio de Janeiro, Igarapé is today ranked as one of the leading think tanks in the world and works with governments, the private sector and civil society to co-design data-driven partnerships and solutions to complex challenges. In 2020, was the only Brazilian included on Prospect Magazine's list "The world’s top 50 thinkers 2020", amongst other "scientists, philosophers and writers reshaping our times". Her position among the top 50 was later revealed to be fifth place.

Ilona Maria Gusenbauer is a retired Austrian high jumper. She competed at the 1968 and 1972 Olympics and finished in eighth and third place, respectively. She held the world record for more than a year starting in 1971, and was the Austrian champion in 1966–1973, 1975 and 1976.