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Contents 1 In science 2 In computing 3 Universities 4 Places 5 Organizations 6 Miscellaneous 7 Au or Aue- earlier Ouwe in geography

Au or AU may refer to:

• Absorbance Units (AU), in spectroscopy, a logarithmic scale of relative absorption of a given wavelength of light
• Astronomical unit (AU, au, a.u., or ua), a unit of length approximately equal to the distance between the Earth and the Sun
• Atomic units (au), a system of measurement units based on fundamental atomic properties
• The chemical symbol of Gold (Au)

• .au Internet country code top-level domain for Australia
• au file format, Sun Microsystems' audio format
• Audio Units plug-in programming interface from Apple Computer

• Aarhus University, Aarhus, Denmark
• Aberystwyth University (former member of the University of Wales), Aberystwyth, United Kingdom
• Alfred University, Alfred, New York, United States
• Allahabad University, Allahabad, Uttar Pradesh, India
• American University, Washington, DC, United States
• Andrews University, Michigan, United States
• Anderson University (Indiana), Anderson, Indiana, United States
• Anderson University (South Carolina), Anderson, South Carolina, United States
• Athabasca University, Athabasca, Alberta, Canada
• Auburn University, Auburn, Alabama, United States

• Australia (WMO and ISO country code digram); see ISO 3166-2:AU for subdivisions
• Austria (FIPS 10-4 and obsolete NATO country code digram)
• Au im Bregenzerwald, a town in the district of Bregenz in Vorarlberg in Austria
• Au (Munich), a district in Munich, Germany and part of the Au-Haidhausen borough of the city.
• Au, Guinea, a town in the Kankan Region of Guinea

• Adventure Unlimited
• African Union
• Akademia Umiejętności (Academy of Learning), Polish science institution
• Alternative Ulster, music magazine based in Belfast, Northern Ireland
• Americans United for Separation of Church and State
• au (mobile phone operator), in Japan
• Austral Lineas Aereas, airline (IATA airline code AU)

• Au, the Norwegian form of ouch.
• Adelaide United FC, an Australian professional football (soccer) club
• Au (squat), a well-known squatted building in Frankfurt, Germany
• Aú is a cartwheel in the Brazilian martial art of Capoeira
• Alternative universe (fan fiction), a fan fiction term
• Annals of Ulster, in Irish historical writings
• Athletic Union, the union of sports clubs in a British university
• Au (surname) (區 or 歐) is a common family name in Hong Kong
• Au, predecessors of the Vietnamese people
• Ford AU Falcon, a car that was sold in Australia and New Zealand from 1998 to 2002
• Avengers United, a UK comic commonly referred to as AU

Au or Aue is an old Germanic word for stream, larger rivulet, or smaller river, a cognate of several rivers Aa and with Å in Swedish. Therefore, Au or Aue (earlier Old High German ouw(i)a or MHG ouwe, owe) are used in connection with the names of many towns and places. Related are territories, named Gau or Gaue.

Samples:

Germany

• Au in der Hallertau
• Au-Breisgau

Switzerland

• Au, Schaffhausen
• Au, Thurgau
• Au, Zürich
• Au, St. Gallen

Austria

• Au am Anzbach
• Au am Kraking
• Au am Leithaberge
• Au an der Donau
• Au an der Traun
• Au bei Brandstatt
• Au bei der Traun
• Au bei Ed
• Au bei Hischmannsberg
• Au bei hohen Steg
• Au bei Natternbach
• Au bei Sirfling
• Au bei Turnau
• Au im Bregenzerwald