550 may refer to:
550, a year in the Common Era 550 (number), a number 550, the FTP error code meaning "Requested action not taken. File unavailable (e.g., file not found, no access)." 550 Music, a record label SIG SG 550, an assault rifle 550 cord, a type of parachute cord 550 Broad Street, an office building in Newark, New Jersey in the United States Radeon RX 550, a GPU designed by AMD New Balance 550, a shoe
Transportation Tin Yat stop, one of the MTR Light Rail stops which has the MTR code 550
Vehicles Kawasaki JS550, a jet ski produced by Kawasaki Motors Porsche 550, a racing sports car produced by Porsche Ferrari 550 Maranello, a grand tourer produced by Ferrari BMW M550d, an executive car produced by BMW Roewe 550, also known as the MG 550, a compact sedan produced by SAIC Motor Gulfstream G550, marketing name of an aircraft produced by Gulfstream Aerospace Gulfstream Peregrine, company model number 550, a prototype single-engine business jet