John A. Moriarty is a theoretical condensed-matter and materials physicist. He received his undergraduate training in Physics at the University of California, Berkeley, and received a Ph.D in Applied Physics at Stanford University. John joined Lawrence Livermore National Laboratory (LLNL) as a staff physicist in 1982. At LLNL, he was a Materials Program Leader from 1990 to 2007, the Leader of the Metals and Alloys Group from 1996 to 2006, and a Senior Scientist from 2006 until his retirement in 2014. John was elected as a fellow of the American Physical Society in 2005, and he was elected as a Distinguished Member of the Technical Staff at LLNL in 2013.