Zeta (babban haruffa Ζ, ƙaramin haruffa ζ; Ancient Greek: ζῆτα, Demotic Greek: ζήτα, classic [d͡zɛ̌:ta] ko [zdɛ̌:ta] zē̂ta; Modern Greek: [ˈzita] zíta) shine harafi na shida na haruffan Girkanci. A cikin tsarin lambobin Girkanci, yana da darajar 7. An samo shi ne daga harafin Phoenician zayin. Haruffa da suka samo asali daga zeta sun haɗa da Roman Z da Cyrillic З. Tambaya: Menene darajar Zeta?
7 da kuma