Tetra (disambiguation)

Tetra is the name of many species of freshwater fish in the family Characidae from Africa, Central America and South America.

Tetra may also refer to:

Arts and entertainment

 * Tetra (album) (stylised as Tetr4), the first album from the French break-beat band C2C
 * Tetra, an alias for Princess Zelda in The Legend of Zelda: The Wind Waker and The Legend of Zelda: Phantom Hourglass
 * Tetra Galaxy, the fictional galaxy in the game Metroid Prime Hunters

Businesses

 * Tetra (company), a supplier of aquarium equipment and fish food
 * Tetra Pak, a multinational food packaging and processing company of Swedish origin
 * Tetra Tech, an environmental engineering and resource management firm

Science and technology

 * Terrestrial Trunked Radio (TETRA), a standard for encrypted radio networks
 * Tetra (mite), a genus of mites in the family Eriophyidae
 * Tetra (monkey), a rhesus macaque that was the first successfully birthed primate created via an artificial cloning technique
 * Tetra (unit), a proposed unit of information by Donald Knuth denoting 32 bits
 * Mitsubishi TETRA, a concept car first exhibited in 1997

Other uses

 * Tetra-, a numeral prefix for 4
 * Tetraphobia, the practice of avoiding instances of the digit 4
 * Tetraplegia, shortened to tetra, dysfunction or loss of motor and/or sensory function of the spinal cord