Charles Glover Barkla, English-Scottish physicist and academic, Nobel Prize laureate (b. 1877)

Charles Glover Barkla FRS FRSE (7 June 1877 – 23 October 1944) was a British physicist, and the winner of the Nobel Prize in Physics in 1917 for his work in X-ray spectroscopy and related areas in the study of X-rays (Roentgen rays).