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MRO or Mro or variant may refer to:





Operations and techniques[edit]

  • Maintenance, repair and operations, 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


  • 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[edit]

See also[edit]

  • Mr. O (Canadian TV show), 1950s children's show