Chukwu is the supreme being of the Igbo religion. In the Igbo pantheon, Chukwu is the source of all other Igbo deities, and is responsible for assigning them their different tasks. The Igbo people believe that all things come from Chukwu, who brings the rains necessary for plants to grow and controls everything on earth and the spiritual world. They believe Chukwu to be an infinitely powerful, undefinable, supreme deity encompassing everything in space and space itself.
Linguistic studies suggest that the name "Chukwu" or "Chukouuee" is a portmanteau of the Igbo words "Chi" ("spiritual being") and "Ukwu" ("great in size").