(b ?Strasbourg, 1711; d Strasbourg, 24 Oct 1751). French draughtsman and engraver. He was a resident of Strasbourg, whose work has received little attention from the Paris-orientated historians of 18th-century French engraving. However, he trained in Paris under Jean-Baptiste de Poilly and his most important work, the Représentation des fêtes données par la ville de Strasbourg pour la convalescence du Roi (IFF, xiii, nos 29–39), was in large part executed by the celebrated Paris engraver Jacques-Philippe Lebas. This commemorative volume, ‘invented, drawn and directed’ by Weis, records the elaborate celebrations on the occasion of Louis XV’s visit to the city in 1744. It consists of 11 double-spread folio prints, which combine a minutely detailed description of the buildings of the city with a strong pictorial sense. Weis’s name also appears on the Good Mother (1744), one of a series of prints made in Paris with false attributions to Jean-Siméon Chardin, but the bulk of his work, produced in Strasbourg, consists of prints of topographical subjects and contemporary events. His son, also called Johann Martin Weis (1738–1807), followed a similar career.