Robert M. "Bob" Berdahl (born 1937) is an American administrator, historian and the interim President of the University of Oregon.

Born in Sioux Falls, South Dakota, Berdahl received a Bachelor of Arts from Augustana College in 1959. Additionally, he obtained a Master of Arts from the University of Illinois in 1961. He would later follow Dr. Otto Pflanze to the University of Minnesota where he received his doctorate in 1965, with a dissertation on the Prussian Conservative Party during German unification circa 1870. He was president of UT Austin from 1993 to 1997 and later chancellor of the University of California, Berkeley from 1997 to 2004. After leaving Berkeley, he became president of the Association of American Universities (AAU) from May 2006 to June 2011. In addition to his duties as interim President, he serves on the Board of Directors of Lam Research Corporation.

In December, 2011, the Oregon State Board of Higher Education asked Berdahl to serve as the president of the University of Oregon on an interim basis. The presidency of the University of Oregon had recently been vacated by Richard Lariviere following his early termination by the state board.