Imo (Igbo: Alaọha Imo) is a state in the South-East geopolitical zone of Nigeria, bordered to the north by Anambra State, Rivers State to the west and south, and Abia State to the east. It takes its name from the Imo River which flows along the state's eastern border. The state capital is Owerri and the State's slogan is the "Eastern Heartland."
Of the 36 States in Nigeria, Imo is the third smallest in area, but is the fourteenth most populous, with an estimated population of over 5.4 million as of 2022. Geographically, the state is divided between the Niger Delta swamp forests in the far east and the drier Cross–Niger transition forests in the rest of the state. Other key geographical features are the state's rivers and lakes with the Awbana, Imo, Orashi, and Otamiri rivers along with the Oguta Lake in western Imo State.