The Oodua Peoples Congress (OPC) is a Yoruba nationalist organization in Nigeria. The Yoruba people, who live in the southwestern and some North central parts of Nigeria, and in neighbouring countries such as Benin, are a large ethno-linguistic group; the majority of them speak the Yoruba language (ede Yorùbá).It is also known as the Oodua Liberation Movement (OLM) or the Revolutionary Council of Nigeria'"O'odua Peoples Congress (OPC)", globalsecurity.org, 16 February 2003