The Zeta Plain (Montenegrin: Zetska ravnica / Зетска равница, pronounced [zɛ̂ta]) is a fertile lowland in Montenegro. It stretches from Podgorica in the north to the Skadar Lake in the south. It is the biggest plains area in Montenegro, with an average elevation around 40 m (130 ft) above sea level.
The name "Zeta" derives from an early root meaning "harvest" or "grain" (modern words žetva and žito). Confusingly, Zeta River flows not through the Zeta Plain but through another significant valley in Montenegro, Bjelopavlići.