Pierre Vsevolod Sokolsky is an American physicist renowned for his contributions to high-energy cosmic ray physics and astrophysics. He serves as a Distinguished Professor of Physics and Astronomy at the University of Utah and is Dean Emeritus of the university's College of Science. Sokolsky is a Fellow of the American Physical Society, recognized for his pioneering work on the detection and study of ultra-high-energy cosmic rays. He played a leading role in the development of the Fly’s Eye and High Resolution Fly’s Eye experiments, which advanced the understanding of cosmic ray origins and energies. His work has earned him widespread recognition in the field of astrophysics.