Johann Moritz Rugendas (29 March 1802 – 29 May 1858) was a German painter, famous for his works depicting landscapes and ethnographic subjects in several countries in the Americas, in the first half of the 19th century. Rugendas is also the subject of César Aira's 2000 novel, An Episode in the Life of a Landscape Painter.
Rugendas was born in Augsburg, Germany, into the seventh generation of a family of noted painters and engravers of Augsburg (he was a great grandson of Georg Philipp Rugendas, 1666–1742, a celebrated painter of battles), and studied drawing and engraving with his father, Johann Lorenz Rugendas II (1775–1826). From 1815-17, he studied with Albrecht Adam (1786–1862), and later in the Academy de Arts of Munich, with Lorenzo Quaglio II (1793–1869).
Inspired by the artistic work of Thomas Ender (1793–1875) and the travel accounts in the tropics by German naturalists Johann Baptist von Spix (1781–1826) and Carl von Martius (1794–1868), in the course of the Austrian Brazil Expedition, Rugendas arrived in Brazil in 1821. There he was soon hired as an illustrator for Baron von Langsdorff's scientific expedition to Minas Gerais and São Paulo. Langsdorff was the consul-general of the Russian Empire in Brazil and had a farm in the northern region of Rio de Janeiro, where Rugendas went to live with other members of the expedition.
In this capacity, Rugendas visited the Serra da Mantiqueira and the historical towns of Barbacena, São João del Rei, Mariana, Ouro Preto, Caeté, Sabará and Santa Luzia. Just before the fluvial phase of the expedition started (a fateful journey to the Amazon), he became alienated from von Langsdorff, left the expedition and was replaced by the artists Adrien Taunay and Hércules Florence. However, Rugendas remained on his own in Brazil until 1825, exploring and recording his many impressions of daily life in the provinces of Mato Grosso, Pernambuco, Bahia, Espírito Santo and Rio de Janeiro. He produced mostly drawings and watercolors.