Zeta or ZETA can refer to:

Alphabet

• Zeta (letter), the sixth letter of the Greek alphabet

Science

• Zeta functions, in mathematics
  • Riemann zeta function
• Tropical Storm Zeta (2005), formed in December 2005 and lasted through January 2006
• Z-pinch, in fusion power
• Zero Energy Thermonuclear Assembly reactor, a British test facility
• magnussoft ZETA, a computer operating system

Geography

• Zeta River, in Montenegro
• Zeta plain, in Montenegro

History

• Principality of Zeta, a medieval state, today Montenegro
• Zeta Banovina, one of provinces (banovina) of the Kingdom of Yugoslavia between 1929 and 1941

Popular culture

• Zeta Metroid, species of Metroid from Metroid II: Return of Samus.
• Zeta Phi Beta, African-American Sorority and member of the National Pan-Hellenic Council
• Zeta Phi Omega, International Fraternity and Sorority (1975)
• Zeta Phi Omega, (Lambda Upsilon Chapter, LDCU)
• Zeta Tau Alpha, Sorority and member of the National Panhellenic Conference
• Z (film), a political film by Costa Gavras
• Catherine Zeta-Jones, Welsh actress
• GM Zeta platform, a full-size car series
• Mobile Suit Zeta Gundam, a televised anime
• ZETA, a computer operating system

Publishing

• Zeta, a Baja California investigative journalism newsweekly

Fictional characters

• Zeta, a fictional robot character appearing in the animated series Batman Beyond and The Zeta Project
• E-105 Zeta, one of the E-Series robots that appeared in Sonic Adventure.
• MSZ-006 Zeta Gundam A fictional mecha that appeared in Zeta Gundam.
• Zeta is the name of one of Zim's classmates on Invader Zim

Other meanings

• Zeta Phi Omega, International Fraternity and Sorority (1975)
• Zeta Phi Omega, (Lambda Upsilon Chapter, LDCU)
• Zeta, an Australian car produced by Lightburn
• ZetaBoards, the new company name for the message board service InvisionFree
• FK Zeta, a Montenegrin football club
• A zeta key, a tool used to drive screws and bolts which have a hexagonal socket in the head. Also known as "hex key".

See also

• zetta-, a prefix in the SI system of units
• zeta is also the Spanish name of letter z.
• Zeta is also a rare girls/womens name