Samuel Des Marets or Desmarets (Latin: Maresius; Oisemont, 1599 – Groningen, 18 May 1673) was a French Protestant theologian.
He studied in Paris, in Saumur Academy under Gomarus, and in Geneva at the time of the Synod of Dort.
He was ordained in 1620, and preached at Laon until a controversy with Roman Catholic missionaries.
He won a reputation that led to calls to Saumur, Marburg, Lausanne, and Leiden.
His literary activity was chiefly polemical, against Roman Catholics, Socinians, Arminians, Amyraldism as represented by Dallaeus, Chiliasm and other views.