RML may refer to: RML Group, a motorsports and high performance engineering company RML 380Z, an 8-bit computer built in Britain Ratmalana Airport (IATA: RML), near Colombo, Sri Lanka Reuters Market Light, a phone service to provide Indian farmers with timely information Revised Marriage Law, a 1980 revision of the New Marriage Law in China Riemann Musiklexikon, a music encyclopedia Rifled muzzle loader, a type of gun common in the 19th century AEC Routemaster, a type of double-decker bus Rocket Madsen Space Lab (RML Spacelab), Copenhagen, Denmark Rocky Mountain Laboratories, a research institute in Montana, United States Roddenbery Memorial Library, in Cairo, Georgia, United States Royal Mail Lines, once a major shipping company, the successor to the Royal Mail Steam Packet Company See also