Efik-Ibibio shine babban rukunin yaren ƙungiyar Cross River reshen Benue-Congo . Ingancin Efik daidai yana da matsayin ƙasa a Najeriya kuma shine ma'aunin adabi na yarukan Efik, kodayake Ibibio mai dacewa yana da masu magana da yawa. Efik-Ibibio yanki ne na yare wanda kusan mutane miliyan 9.5 na jihar Akwa Ibom da Jihohin Kuros Riba na Najeriya ke magana dashi, hakan yasa ya zama rukuni na shida mafi girma a Najeriya bayan harsunan Hausa, Yarbawa, Igbo, Fulani da Kanuri . Manyan harsunan Efik-Ibibio sune: Anaang (masu magana da magana miliyan 4, kimantawar shekarar 2018) Ibibio (mai yiwuwa masu magana da magana miliyan 5 zuwa 6, kimantawa ta 2018; da'awa tun lokacin da aka soke ta ta Ethnologue ; kuma ana amfani da ita azaman yaren kasuwanci) Efik (masu magana da miliyan 2.5, kimantawar 2018. Har ila yau, Efik yana da kusan masu magana da harshe na biyu miliyan biyu. ) Ƙanan iri, a cewar Williamson da Blench, sune: Ekit (masu magana 200,000), tare da yare Etebi Efai (masu magana 7,000) Ibuoro (masu magana 20,000), tare da yarukan Ibuoro mai dacewa, Ito, Itu Mbon Uzo da Nkari Eki (masu magana 5,000) Idere (Masu magana 5,000) Ukwa (masu magana 100) Waɗannan ana iya jayayyarsu da yare ɗaya, kodayake Ethnologue yana ɗaukar su daban.