Guy Marchant (also Gui or Guyot; in Latin Guido Mercator) was a printer of books, active in Paris from 1483 to 1505/1506. He had received a university education as a Master of Arts and is recorded as being a priest. He was succeeded by his nephew (1504–1516). The ISTC Database records about 190 editions printed by (or attributed to) the press of Guy Marchant up to the year 1500. A further 10 or 12 were printed in the sixteenth century before the business was taken over by Jean Marchant.Marchant's typographical material is enumerated in BMC volume 8.