Ulrich von Türheim (c. 1195 – c. 1250) was a German nobleman and a writer from the Augsburg area active during the first half of the 13th century.
Ulrich was born into Türheim family, an uradel German noble family originating in Swabia. Three of his works have survived: a conclusion to the version of the Tristan legend left unfinished by Gottfried von Strassburg; Rennewart, a continuation of Willehalm, left unfinished by Wolfram von Eschenbach; and fragments of a version of Cligès based on that of Chrétien de Troyes. It is not known whether this last work was a separate work or also a continuation, in this case of a now lost Cligès by Konrad Fleck. The relative chronology of these works is disputed, though Rennewart is generally regarded as the last.
Conrad of Winterstetten was his patron.