The “B. Papantoniou” Peloponnesian Folklore Foundation (PFF) is a nonprofit institution based in Nafplion, Greece, and aims at the research, preservation, study and presentation of the material culture of the Peloponnese as well as of the whole of Greece and the evolution of the international fashion. It was founded in 1974 by Ioanna Papantoniou in memory of her father. It is housed in the residence of B. Papantoniou, which was converted into a museum in 1981.

This same year with its exhibition “The Production, Elaboration and Use of Natural Fibres in Greece” the Museum won the 1981 Museum of the Year Award (EMYA) “...because of the manifold activities of the Foundation in the area of tradition, the quality and size of its collections, the excellence of its displays, the superb graphics, the range and scholarship of its research projects and the originality and thoroughness of its educational programmes”.

In 2013 PFF was honoured by the Academy of Athens for its long term contribution to the promotion of the Hellenic culture.

The PFF collections now number 50.000 artifacts, covering all the branches of study relating to modern culture.

On October 1989 the PFF inaugurated in the old railway station in Nafplion a model place dedicated to the child. This area which includes the building of the depot of the old Nafplion Railway Station and the platform, was granted by the Municipality of Nafplion to the PFF and it has been converted it into the first Childhood Museum in Greece,  “Stathmos” (The Station).

The exhibition “Paidiothen… (From childhood)”comprises children's toys and objects from the collections of the PFF, which date from the 19th and 20th centuries. Through the variety of exhibition units we are able to follow the changes in children's lives and their toys. One can view copies of ancient toys, objects related to the birth, the baptism and the first years of a child, as well as numerous toys. The exhibition also presents two collections that cover the childhood of two girls who were born in 1938 and 1948, as well as a selection of objects by a collector with an exceptional aesthetic criterion and a love of toys.

In 1989 Melina Mercouri as Minister of Culture of Greece assigned to the PFF the National Costume Archives. In 2003 Ioanna Papantoniou founded the Greek Costume Society as an extension of the Archives, aiming to a Costume Culture Museum in Greece.

The library of the Foundation now numbers about 12.000 books and 250 periodical publications, covering the fields of Ethnography, Museology, Costume, Dance, Theatre, Sociology, History, Arts and Children literature.

The archives of the PFF contain rare material mostly of in situ research about costume, dance, folk songs etc.

The Peloponnesian Folklore Foundation publishes two journals, Ethnografika and Endymatologika.