Konrad Witz was a German painter, active mainly in Basel. His 1444 panel The Miraculous Draft of Fishes (a portion of a lost altarpiece) has been credited as the earliest extant faithful portrayal of a landscape in European art history, being based on observation of real topographical features.

Witz is most famous for painting three altarpieces, all of which survive only partially. The earliest is the Heilspiegel Altarpiece [fr] of about 1435, which today is mostly in the Kunstmuseum, Basel, and with isolated panels in other collections. The next is the Altarpiece of the Virgin (c. 1440), which has been associated with panels now in Basel, Nuremberg, and Strasbourg (Saint Madeleine and Saint Catherine, Musée de l'Œuvre Notre-Dame). Witz's final altarpiece is the St. Peter Altarpiece of 1444, painted for St. Peter's Cathedral, Geneva, and now in the Musée d'Art et d'Histoire, Geneva, which contains his most famous composition, the Miraculous Draft of Fishes.