Kogin Muni wani ɗan gajeren kogi ne a kudancin babban yankin Equatorial Guinea. Wani ɓangare na tsayinsa, gami da mashigar ruwa, wani yanki ne na kan iyaka da Gabon. Daga wannan kogin ne aka ɗauki tsohon sunan wannan yanki na ƙasar Equatorial Guinea Río Muni. An ciyar da mashigar a arewacin ƙasa Congue da Kogin Mandyani kuma daga gabas ta Mitong, da Mven da kuma Kogin Timboni (Mitimele, Utamboni). A directory of African wetlands By R. H. Hughes, J. S. Hughes, p. 499-501 (on Google Books: )