John Z'graggen (born Hans Anton Z'graggen on 24 June 1932 in Schattdorf, Canton of Uri, Switzerland; died 20 May 2013 in Menzingen, Switzerland) was a Swiss Roman Catholic priest, missionary, linguist, and anthropologist known for his extensive work on Papuan and Oceanic languages, especially the Madang languages.
In 1965 or 1966, he enrolled at the Australian National University, where he completed the doctoral thesis Classificatory and typological studies in the languages of Madang District in 1969.
Z'graggen continued to do research on Madang anthropology and linguistics until he was assigned to return to Switzerland in 1991.
[4] Many of Z'graggen's tape recordings and field notes are kept at the Basel Museum of Cultures, as well as at the Divine Word University in Madang.
[4] Z'graggen collected numerous word lists of Madang languages, many of which have been published as monographs by Pacific Linguistics: Selected book chapters: Z'graggen has written prolifically on the mythology and cosmology of the Madang peoples.