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MU, Mu or μ may refer to:

Arts and entertainment[edit]

Film and television[edit]

  • Aries Mu, a character from the anime Saint Seiya
  • Mu La Flaga, a character from the anime Mobile Suit Gundam SEED
  • Monsters University, a 2013 animated film by Disney and Pixar
  • "μ's" (pronounced "Muse") is the name of the protagonist school idol group in the anime series Love Live!.



Businesses and organizations[edit]

Businesses and brands[edit]

Other organizations[edit]

Language and scripts[edit]

Micro-, μ, metric prefix for one millionth


  • Mu River, a river in Burma (Myanmar)
  • Mu River (Hokkaidō), a river in Japan
  • Mù, a village in the Edolo municipality of Italy
  • Mauritius (ISO 3166-1 alpha-2 country code MU)
    • .mu, the country code top-level domain for Mauritius

Mythical places[edit]




United States[edit]

Other countries[edit]

Names and people[edit]

  • Mu (surname) (穆, 牧, 慕, 木, 母, 目, 沐, 睦 and 暮), Chinese surnames
  • Mu family, a powerful Chinese family from the 14th to the 18th century
  • Mu of Baekje (580–641), king of Baekje
  • Mu of Balhae (died 737), king of Balhae from 718 to 737
  • Marquis Mu of Cai, ruler of the state of Cai from 675 to 646 BC
  • King Mu of Chu (died 614 BC), king of the state of Chu from 625 to 614 BC
  • Emperor Mu of Jin (343–361), emperor of the Eastern Jin Dynasty
  • Marquis Mu of Jin (died 812 BC), ruler of the state of Jin from c. 798 to 776 BC
  • King Mu of Zhou (died 922 BC), king of the state of Zhou from c. 976 to 922 BC
  • Mu Dan (1918–1977), Chinese poet and translator
  • Athing Mu (born 2002), American middle-distance runner

Religion and philosophy[edit]

Science, technology, and mathematics[edit]

Biology and medicine[edit]

  • Mu phage, a bacteriophage of the family Myoviridae of double-stranded DNA non-enveloped contractile tail bacterial viruses
  • Centimorgan, or "map unit", a unit of recombinant frequency in genetics
  • Monitor unit (MU), a measure of absorbed dose from a linear accelerator in radiation therapy = 0.001 Gray
  • SARS-CoV-2 Mu variant, one of the variants of SARS-CoV-2, the virus that causes COVID-19
  • Mouse unit, the amount of toxin required to kill a 20g mouse in 15 minutes via Intraperitoneal injection


  • Chemical potential, a form of potential energy that can be absorbed or released during a chemical reaction
  • Bridging ligand, an atom that connects two or more metal centers in a complex (molecule)



  • Micro-, SI (metric) prefix denoting a factor of 10−6 (one millionth)
  • Micrometre (deprecated as a single-character symbol)
  • Million units of energy, a term used in India for a gigawatt-hour, see kilowatt-hour#Other related energy units
  • Mu (unit), a Chinese unit of area also spelled "mou", equivalent to about 0.066 hectares.


Other uses in science and technology[edit]

  • μ, in evolutionary algorithms, the population size from which in each generation λ offspring will generate
  • Mu (rocket family), a Japanese rocket family launched between 1966 and 2006
  • Multiple unit, self-propelled train carriages capable of coupling with other units of similar type
  • Olympus mju (stylised as μ[mju:]), series of a compact cameras

Other uses[edit]

See also[edit]