Arnold de Lantins (fl. 1420s, d. before July 2, 1432) was a Franco-Flemish composer of the late Medieval era and early Renaissance. He is one of a few composers who shows aspects of both medieval and Renaissance style, and was a contemporary of Dufay during that composer's sojourn in Italy. Very little is known about his life, except for a few years in the 1420s to around 1430. It is presumed that he was from Flanders or adjacent areas.