Umu-Nneochi or Umunneochi is a Local Government Area (LGA) in Abia State, Nigeria.

Officially known as "Nneochi", Umunneochi is made up of three major septs: Umuchieze, Nneato, and Isuochi. The major towns of Umunneochi are Umuelem, Ndiawa, Amuda, Umuaku, Achara, Lomara, Ngodo-ukwu, Lokpaukwu, Leru, Lomara Lokpanta, Lekwesi and Mbala.These towns have been repeatedly reorganized. The paramount traditional ruler of isuochi is Eze G I Ezekwesiri, the Ochi 1 of Isuochi, while the federating autonomous communities are governored by Ndi-Eze.[citation needed]

Umunneochi headquarters is in the administrative town of Nkwoagu, Isuochi. Nkwoagu is also the administrative capital, which in ancient and modern times were political and administrative rallying points for the Umunneochi autonomous communities.

Umunneochi occupies 368 km2 with a population of 163,928, according to the 2006 Nigeria National Census.