PHM may refer to: Prognostics and health management PulteGroup, NYSE stock symbol Penn-Harris-Madison School Corporation, Indiana, US Patrol Hydrofoil Missile, US Navy Hull classification symbol Pretty Hate Machine, the debut album from Nine Inch Nails Proto-Hmong–Mien language Pure homopolar motor, is an electric motor not requiring brushes, electronics, or semiconductor parts to convert direct current into torque. PHM Racing, a German auto racing team