Gauthier Manilius (died late 1626) was active as a printer and bookseller in Ghent from 1574 until his death.
Gauthier took over the family printing business, founded by his father, on his brother Ghileyn's death in 1574.
Under the Calvinist regime (1578–1584) he printed Calvinist books, most importantly a Dutch abridgement of Calvin's Institutes of the Christian Religion.
Much of his work, however, was legal printing for the City of Ghent and the Council of Flanders, and other secular material.
[1] His widow ran the business from 1626 to 1631, when their son, Servais Manilius, came into his inheritance.