Mu can be:

• Mu, Μ or μ, a letter in the Greek alphabet.

μ is used as a symbol for:

• • The SI prefix micro, meaning a factor of 10^-6 (one millionth).
    • μ by itself is often used as the "unit" of strain, though in this context it retains its SI prefix meaning, which is interchangeable with "x 10^-6" or "ppm" (parts per million).
    • μ by itself is an abbreviation for the unit micron. Both the term and the abbreviation should not be used. The preferred terms are µm and micrometre
  • In mathematics,
    • The arithmetic mean of a statistical population
    • The Möbius function
    • The least-fixed-point-operator
    • A degree of membership from a fuzzy set.
  • In chemistry,
    • The chemical potential
  • In physics,
    • The coefficient of friction
    • The mobility coefficient
    • The permeability (electromagnetism) coefficient
    • The muon, an elementary particle
    • The standard gravitational parameter
    • The magnetic dipole moment
    • The linear density
    • Viscosity
    • Reduced mass
  • µTorrent, a freeware BitTorrent client for Microsoft Windows written in C++.
  • μZiq, An alias of Mike Paradinas.

In Asian languages:

• Mù, (穆), a Chinese surname
• Mu (unit of area) (亩/畝), a Chinese unit of area
• Mu (kana), represented by the Japanese kana む or ム
• Mu (negative) (無), a Japanese word important in Zen koan practice

Mu may also refer to:

• Muonium's atomic symbol
• Mu-metal, an alloy used for screening magnetic fields
• Mu (lost continent), a mythical continent in the Pacific Ocean subsequently appearing in several books, films, and games
• Mu (rocket), a Japanese rocket
• Mu Dan, Chinese poet and translator
• Mu Online, an online role-playing game
• Mu La Flaga, a character from the anime Mobile Suit Gundam SEED
• Aries Mu, a character from the cartoon Saint Seiya
• Groupe Mu, an interdisciplinary Belgian group focusing on linguistics and rhetoric
• Lemuria, a hypothetical lost continent

MU may stand for:

• Mauritius' ISO 3166-1 alpha-2 country code
• China Eastern Airlines's IATA code
• Manchester United Football club
• The Mothers' Union, global Anglican women's organisation
• Monitor unit, a unit used in radiation therapy
• Centimorgan or "map unit", a unit of recombinant frequency in genetics
• Multiple unit, such as a rail diesel car
• MU puzzle, a puzzle in Gödel, Escher, Bach
• University of Mumbai, formerly called the University of Bombay
• Marquette University
• Marshall University
• Miami University, a public university in Oxford, Ohio
• Millersville University of Pennsylvania
• Miskatonic University
• University of Missouri, a public university in Columbia, Missouri
• Mahidol University, a University in Thailand
• Manipal University, a university in Karnataka, India
• MU (70's band), an early 1970s psychedelic group led by Merrell Fankhauser and Jeff Cotton
• MU (00's band), a 00's electro-punk group made up of producer Maurice Fulton and his wife Mutsumi Kanamori.
• Mirror Universe (Star Trek), fictional parallel universe in which the plots of several Star Trek television episodes take place
• Magic-User, a class type in D&D, HackMaster, and many fantasy RPGs
• Musician, an enlisted rating in the United States Navy
• Isuzu MU Wizard
• Micron Technology

This disambiguation page lists articles associated with the title Mu. If an internal link led you here, you may wish to change the link to point directly to the intended article.