Johann Nepomuk Rauch was an Austrian landscape painter and engraver.

Johann Nepomuk Rauch was one of the painter's sons from the canton of Thurgau (Switzerland), his brothers Ferdinand and Johann Josef and his son Carl also became painters. Rauch studied at the Vienna Art Academy , then in Florence from 1829 to 1831. He spent the period from 1831 to 1841 in Moscow, where he was promoted by Count Alexandr Nikitich Panin (1791-1850). From 1841 he worked in Rome. He died in Rome at the age of 43.

In Russia he created several views of the Moscow Kremlin, the residence of Prince Sergei Mikhailovich Golitsyn (1774–1859) in Kuzminki (Vlachenskoye), Arkhangelskoye and Marfino. He also toured the Caucasus.