UU or uu may refer to:

Businesses

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Language

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  • "uu", an old way of spelling the letter "w" in certain Germanic languages, including Old English
  • The letter combination of uu

Science and technology

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  • UUNET, Internet Service Provider commonly referred to as 'UU'
  • Unique users, may be counted as part of web analytics in determining the popularity of a website
  • UMTS air interface or "Uu interface", which links User Equipment to the UMTS Terrestrial Radio Access Network
  • Unix-to-Unix, as in uuencode, a data transport encoding
    • .uu, a compressed archive file extension, associated with uuencode

Universities

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Other uses

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See also

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