RM, rm, or R&M may refer to:
RMS Titanic (/taɪˈtænɪk/) was a British passenger liner that sank in the North Atlantic Ocean in the early morning of 15 April 1912, after colliding with an iceberg during her maiden voyage from Southampton to New York City.
RMS Lusitania was a British ocean liner that a German submarine sank in World War I, causing a major diplomatic uproar.
RMS Queen Mary 2 (also referred to as the QM2) is a transatlantic ocean liner. She is the only major ocean liner built for Cunard Line since Queen Elizabeth 2 in 1969, the vessel she succeeded as flagship of the Cunard Line.
RMS Olympic (/ʊˈlɪmpɪk/) was a transatlantic ocean liner, the lead ship of the White Star Line's trio of Olympic-class liners.
RMIT University (officially the Royal Melbourne Institute of Technology, informally RMIT) is an Australian public research university located in Melbourne, Victoria.
RMS Queen Mary is a retired ocean liner that sailed primarily on the North Atlantic Ocean from 1936 to 1967 for the Cunard Line (known as Cunard-White Star Line when the vessel entered service).
RMS Empress of Ireland was an ocean liner that sank in the Saint Lawrence River following a collision with the Norwegian collier SS Storstad in the early hours of 29 May 1914. Of the 1,477 people on board, 1,012 died.
The RMS Titanic has played a prominent role in popular culture since her sinking in 1912, with the loss of over 1500 of the 2200 lives on board.
RMS Mauretania was an ocean liner designed by Leonard Peskett and built by Swan, Hunter & Wigham Richardson for the British Cunard Line, and launched on the afternoon of 20 September 1906. She was the world's largest ship until the completion of RMS Olympic in 1911 as well as the fastest until Bremen's maiden voyage in 1929. Mauretania became a favourite among her passengers.