William R. Muehlberger

William Rudolf "Bill" Muehlberger (September 26, 1923 – September 14, 2011), Professor of Geology at University of Texas at Austin, was the geology principal investigator of both the Apollo 16 and 17 missions to the Moon, for National Aeronautics and Space Administration (NASA). He died of natural causes on September 14, 2011.

The Apollo 16 Moon rock Big Muley is named after Muehlberger.