The Ulba (Kazakh: ءۇلبى, Үлбі, Ülbı; Russian: Ульба) is a river of Kazakhstan. It joins the Irtysh at Oskemen.

Ulba River in Kazakhstan

49°57′02″N 82°35′04″E / 49.95056°N 82.58444°E / 49.95056; 82.58444