Johann Heynlin, variously spelled Heynlein, Henelyn, Henlin, Hélin, Hemlin, Hegelin, Steinlin; and translated as Jean à Lapide, Jean La Pierre (Lapierre, de la Pierre), Johannes Lapideus, Johannes Lapidanus, Johannes de Lapide (c. 1425 – 12 March 1496) was a German-born scholar, humanist, and theologian who introduced the first printing press to Paris (and France in general) in the late fifteenth century.
Born in Stein, near Pforzheim, in Baden-Württemberg, Heynlin may have been of Swabian origin. (From Stein, meaning "stone" in German, are derived his translated Latinized surname Lapideus and Gallicized surnames La Pierre or à Lapide.) On the completion of his academic studies in Germany, presumably at Leipzig and Freiburg, he proceeded to Paris to pursue the study of philosophy and theology. In Paris, he came in contact with the foremost representatives of Realism, who, recognizing Heynlin's abilities and probable future influence, exerted their powers to the utmost to mould his mind after their own and thus make him like themselves a bitter opponent of Nominalism. Their efforts were successful.
In 1464, Heynlin went to the University of Basel and applied for admission to the professorial faculty of arts. The old controversy regarding the nature of Universals had not yet subsided, and in the university of Basel Nominalism held sway. Hence in view of this and the maintenance of peace within the institution, the admission of Heynlin to the faculty was not accomplished without a most vigorous opposition.