Ulpoor II von Graben (before 1300 – about 1361) was an Austrian noble and member of the Von Graben von Stein family.
He was the son of Ulrich I von Graben and Gertrud (both died ca. 1325). Ulrich II held the titles as burggrave of Hohenwang,Gleichenberg and Rothenfels, Herr of Graben (near Novo Mesto in Carniola) and Wetzelsdorf (near Kornberg in Styria). Together with his brothers Otto and Friedrich I Ulrich II bought in 1328 Herrschaft and Schloss Kornberg. Kornberg became the family refuge until 1556.
Ulrich II married with Barbara, daughter from Johann von Auersperg and Cimburgis Schauerpeck, and later with a Lady called Gertraud (died before 1375). They had no children.