László Mezey

László Mezey (5 December 1918 – 14 April 1984) was a Hungarian medievalist and palaeographer.

Mezey was a student of the paleographer István Hajnal, completing the appendix on charter copies of Hajnal's monograph on the medieval universities and script development.{{cite book|author=László Veszpremy|editor=Michael Gervers|title=Dating Undated Medieval Charters|chapter-url=https://books.google.com/books?id=peEfytEdOBIC&pg=PA193|accessdate=14 February 2013|year=2002|publisher=Boydell & Brewer Ltd|isbn=978-0-85115-924-9|page=193|chapter=On the margins of book and charter palaeography, the dating of some Hungarian manuscripts from the eleventh to the thirteenth century}}