MNR

• Maine Northern Railway
• Metro-North Railroad in New York State
• Mid-Norfolk Railway, a heritage railway in Norfolk, England
• Manx Northern Railway, a railway on the Isle of Man from 1879 to 1905
• Manor Road railway station, Wirral, England

• Marc Nordon Racing, a manufacturer of Kit Cars in the UK

• {{lang|fr|Mouvement National Républicain}}, a political party in France
• {{lang|fr|Mouvement national royaliste}}, a Belgian resistance group
• {{lang|es|Movimiento Nacionalista Revolucionario}}, a political party in Bolivia
• {{lang|es|Movimiento Nueva República}}, a progressive political party in Guatemala

• Marine Nature Reserve, a UK conservation designation
• McMaster Nuclear Reactor, a nuclear reactor in Canada
• Ministry of Natural Resources (Ontario), a government agency in Canada
• Minister of National Revenue (Canada), minister in charge of taxation

{{disambiguation}}