Mark Janse (born 31 August 1959 in Sas van Gent, The Netherlands) is BOF-ZAP research professor in Asia Minor and Ancient Greek at Ghent University.
Janse studied classics, Hebrew and linguistics at Ghent University.
Janse was professor of linguistics and classics and head of the Department of Arts & Humanities at University College Roosevelt, an international honours college of Utrecht University (2004-2008).
He is a research associate of the ESRC Centre for Research on Bilingualism at Bangor University (since 2008) and CHS Associate in Greek Linguistics of the Center for Hellenic Studies of Harvard University (since 2017).
[citation needed] In June 2005, Mark Janse and Dimitris Papazachariou from the University of Patras discovered native speakers of Cappadocian Greek, a Greek-Turkish mixed language believed to have died out in the 1960s.