John Louis Sarrao (born February 1, 1967)[citation needed] is an American physicist.

[1][2] As of 2 October 2023, he became the sixth director of SLAC National Accelerator Laboratory[3] In 1993, Sarrao received his PhD in physics from the University of California Los Angeles following a M.S.

[9] He is the principal architect of LANL’s Dynamic Mesoscale Material Science Capability (DMMSC).

[13] On June 7, 2018, Sarrao presented Congressional Testimony for the House Science, Space & Technology Committee Subcommittee on Energy on topics including electric grid research and big data.

[14] In 2013, he was awarded the United States Department of Energy’s Ernest Orlando Lawrence Award for his research in Condensed Matter and Materials Science: “For the discovery and study of new materials, especially those based on Plutonium, advancing understanding of unconventional magnetic and superconducting states in strongly correlated f-electron condensed matter systems.”[15] He was honored for his discovery and study of new materials, especially those based on Plutonium, that advance understanding of novel magnetic and superconducting states in strongly correlated f-electron condensed matter systems.