MRO

MRO or Mro may refer to:

People

 * Mru (disambiguation), peoples and languages also known as Mro
 * Mary Rambaran-Olm, Canadian literary historian

Locations

 * Hood Aerodrome (IATA code MRO), near Masterton, New Zealand
 * Marlborough (disambiguation), some cities named Marlborough use MRO as an abbreviation
 * Magdalena Ridge Observatory, a multi-use astronomical observatory near Socorro, New Mexico, United States
 * Morradoo railway station, Melbourne
 * Murchison Radio-astronomy Observatory in outback Western Australia, one of the Square Kilometre Array core sites

Companies

 * Hokuriku Broadcasting Company, also known as MRO, a broadcasting station in Ishikawa Prefecture, Japan
 * Marathon Oil Corporation, listed on the New York Stock Exchange as MRO
 * Melrose Industries, listed on the London Stock Exchange as MRO
 * MRO Software, a software company best known for its Maximo maintenance management system

Organisations

 * Middlesex Record Office, former historical organisation, merged into the current-day London Metropolitan Archives in 1965
 * Midwest Reliability Organization, an electrical grid reliability organization
 * Oriental Revolutionary Movement (Movimiento Revolucionario Oriental), a Marxist–Leninist communist party in Uruguay
 * Mountains and Rivers Order, headquartered at the Zen Mountain Monastery in Mount Tremper, New York
 * Macedonian Revolutionary Organization, a revolutionary national liberation organization
 * Metsähovi Radio Observatory, an astronomical radio observatory in Kirkkonummi, Finland

Operations and techniques

 * Maintenance, repair and operations (or overhaul), fixing or maintaining any sort of mechanical, plumbing or electrical equipment
 * Main refinancing operations, a technique used by the European Central Bank to control the money supply
 * C3 linearization or Method Resolution Order, an algorithm used primarily to obtain the order in which methods should be inherited in the presence of multiple inheritance

Linguistics

 * Mro language (ISO 639 code: cmr), a Kukish language of Burma
 * Mru language (ISO 639 code: mro), a Sino-Tibetan language of Bangladesh
 * Mro (Unicode block), the Unicode block containing characters for writing the Bangladesh Mru language

Other uses

 * Mars Reconnaissance Orbiter, a NASA Mars probe
 * Mini Racing Online, an arcade-style, freeware online multiplayer racing game
 * The ISO 4217 code for the Mauritanian ouguiya, the currency of Mauritania
 * MRO-A, MRO-D, MRO-Z; the MRO-series of RPG weapons
 * Mitochondrion-related organelle