(b Weissenhorn; d Ulm, 1564). German painter. His training is unknown, but in 1550 he was granted citizenship of Ulm and made town painter. Between 1550 and 1562 he painted four panel paintings for the town hall’s court room, three appropriately showing the Last Judgement (Ulm, Ulmer Mus.), the Judgement of Solomon and the Theban Law Court (both untraced), while the fourth, which is in situ, shows the siege of Ulm in 1552. The large, shaped pinewood panel of the Last Judgement, with its fresh and subtle colour nuances, justifies Rieder’s reputation. It follows in composition the Netherlandish tradition of Bosch, Memling and Rogier van der Weyden, but has been described as ‘a typical work of German Mannerism’ (Treu). In 1562, two years before his death, Rieder was incarcerated for quarrelling with members of his confraternity. His nephew and namesake (d 1575) was also active as a painter in Ulm. A third and later Georg Rieder became town painter of Ulm in 1599.