Mach 3

Mach 3 or variation may refer to:
 * Supersonic speed, three times the speed of sound
 * M.A.C.H. 3, a 1983 LaserDisc arcade video game
 * Mach 3 (1987 video game)
 * Fly Castelluccio Mach 3, a paramotor aircraft
 * Gillette Mach3, a line of shaving razors
 * Kawasaki H1 Mach III, motorcycle
 * Abner Jenkins or Mach-3, a Marvel Comics superhero
 * MACH 3, a Wharfedale MACH loudspeaker
 * Mach III, a program at the youth camp Aviation Challenge
 * Mustang Mach III, a 1990 Ford vehicle
 * Mach3 CNC controller from Artsoft Art Fenerty (actually Newfangled)
 * Mach (kernel), version 3.0