ATU

ATU is the abbreviation for:

• Aarne - Thompson - Uther, a revised version of the Aarne -Thompson index, a classification of fairy tales and vestibular groups
• ADSL Termination Unit
• Auto parts Unger, a car repair shop chain
• Association of Turkish entrepreneurs and start-ups eV
• Africa Triathlon Union, the umbrella organization of the national triathlon federations of Africa

Atu stands for:

• Sub-atmospheric pressure, pressure in at below the reference level

ATU is the prefix:

• The Austrian VAT identification number (UID )

• Disambiguation
• Abbreviation