RPE

RPE is a three letter acronym, which can refer to:
 * Radiation protection expert
 * Rapid palatal expander, an orthodontic device widen the palate
 * Rating of perceived exertion, a scale for assessing perceived exertion during exercise
 * IBM Rational Publishing Engine, a document generation solution
 * Red Pine Elementary in Eagan, Minnesota, USA
 * Respiratory protective equipment
 * Retinal pigment epithelium &mdash; layer of the retina
 * Revenue Per Employee, a ratio used to compare business efficiency
 * Ribulose-phosphate epimerase, human gene for a protein that reversibly converts ribulose to xyulose
 * Rocket Propulsion Establishment, UK-based military research site at RAF Westcott
 * Russet Potato Exchange in Bancroft, Wisconsin, USA
 * Radical Performance Engines a UK company that builds Race car and tuned Hayabusa Motorcycle Engines