Marianna V. Vardinogiannis (Greek: Μαριάννα Βαρδινογιάννη, née Μπουρνάκη Bournaki; 2 June 1937 – 24 July 2023) was a Greek UNESCO Goodwill Ambassador[4] and an activist for the rights of children and the family, and against child sexual abuse via her Foundation for the Child and the Family.

Marianna Bournaki was born on 2 June[6][7] 1937,[1] in Athens, Greece,[8] and raised in Ermione, birthplace of her mother, Evangelia.

At the same time, she supported vulnerable social groups, refugees and schools throughout the Greek territory as well as areas and people that had been affected by natural disasters such as the village of Makistos which was revived after being destroyed by fires.

[10] She developed strong relationships with several international personalities, such as Queen Rania of Jordan,[11] Suzanne Mubarak,[12] several networks, collaborations and organizations such as the Global Coalition Women Defending Peace.

[13] On 14 October 2010, the Elpida (Hope) Children's Oncology located in Athens, Greece, which focuses on child cancer, was inaugurated and opened to the public.