Tau (disambiguation)

Tau is the 19th letter of the Greek alphabet.

Tau may also refer to:

In geography:

• Tau, Norway, a small town in western Norway
• Tău, two villages in Romania
• Tau, American Samoa (Taʻū), an island in the Manuʻa Island Group of American Samoa
• Tau (Tongatapu), the most northern offshore island of Tongatapu, Tonga
• Tau (Haʻapai), an island in the southern part of Haʻapai, Tonga

In science and technology:

• Tau lepton, a fundamental particle
• Tau (protein), a biochemical protein associated with microtubules
• Tau is the standard astronomical abbreviation for the constellation Taurus (constellation)
• Tau in circadian biology is a mutation in the Casein kinase 1 epsilon protein, which regulates phosphorylation of the clock protein PER
• Rational Tau, a UML and SysML modeling tool

In mathematics:

• Tau test in statistics (tau-a, tau-b and tau-c tests or Kendall tau rank correlation coefficient)
• Tau (theorem prover), an automated theorem prover for first-order predicate logic with equality
• Tau (2π), a proposed symbol for the number of radians in a full turn

In fiction:

• Tau (Warhammer 40,000), an alien race from the fictional Warhammer 40,000 universe
• Tau, a character in the Battle Arena Toshinden fighting game series
• Pan Tau - hero of Czech films and television series

In theology:

• Tau (mythology), an evil spirit in Guaraní mythology
• The Cross of Tau, a Christian symbol so called due to its resemblance to the letter Tau

In other uses:

Note: The tau article contains additional uses related to the Greek letter (Τ or τ).

• Jimmy Tau, South African football (soccer) player

TAU, as an acronym, may refer to:

• Tel Aviv University
• TAU (spacecraft), a proposal to send a space probe to a thousand astronomical units from the Earth
• Tuning and Analysis Utilities, a performance evaluation tool in computer science.