The Utroya (, in Latvian the Ritupe) is a river of Latvia and Pytalovsky and Ostrovsky Districts of Pskov Oblast of Russia, a left tributary of the Velikaya River. It is long, and the area of its basin . The principal tributary is the Lzha (the Ludza, right). The towns of Karsava and Pytalovo are located on the banks of the Ritupe/Utroya.