Jementah (Jawi: جمنته) is a mukim in Segamat District, Johor, Malaysia.

Another version stated that the villagers were bored and tired of removing leeches which sucked their blood when they were working, and therefore the combination of the words jemu and lintah which means leech in Malay formed the word Jementah.

[1] Jementah was once a site of the historic civil war in modern Johor history known as Jementah Civil War on 25 October 1879.

With a total area of 228 km2, Jementah is the 5th largest mukim in Segamat District.

[4] Strategically located 16 km from Segamat Town via Federal Route 23.