William James Fulco, S.J., (February 24, 1936 – November 29, 2021) was an American Jesuit priest and National Endowment for the Humanities Professor of Ancient Mediterranean Studies at Loyola Marymount University in Los Angeles, California.

[3] Father William Fulco was fluent in nine languages including English, Spanish, Greek, Latin, Aramaic, Arabic, Hebrew, German.

During his teaching career, he taught courses on topics including Greek and Latin for medicine, archaeology and the Bible, and Mediterranean studies.

[5] He was hired to translate the dialogues for the film The Passion of the Christ (2004), by Mel Gibson,[7][8][9] into a hypothetical reconstructed form of Aramaic, the Aramaic that Jesus spoke, making him one of the few professional historical linguists specializing in the production (or more precisely translation) of texts in unattested or poorly attested languages known to have existed, with a focus on the needs of the movie industry.

Fulco does not reconstruct grammars (open generative structures) of poorly attested or unattested language forms known to have existed.

"[10] Fulco died November 29, 2021, at Sacred Heart Jesuit Center in Los Gatos from pulmonary fibrosis at the age of 85.