E500

E500 can refer to:


 * Alexander Dennis Enviro500, a tri-axle double-decker bus from Alexander Dennis
 * E number 500, a food additive
 * Eclipse 500, a business jet aeroplane
 * Error 500, an "Internal Server Error" on a HTTP-Server
 * Gurgel E500, an electric vehicle produced in Brazil
 * Mercedes-Benz E500, a luxury sports sedan automobile
 * Olympus E-500, a digital SLR camera
 * PowerPC e500, a microprocessor core from Freescale
 * Sharp PC-E500S, a pocket computer by Sharp Corporation