Kogin Nunez ko Rio Nuñez (Kakandé) kogi ne a kasar Guinea tare da asalinsa a cikin tsaunukan Futa Jallon. Hakanan ana kiranta da Kogin Tinguilinta, bayan ƙauye tare da hanyarta ta sama. Kwance tsakanin Kogin Kogon [fr] zuwa arewa da Kogin Pongo a kudu, Nunez ya faɗo zuwa Tekun Atlantika a garin Kamsar mai tashar jiragen ruwa, a gefen tekun Guinea-Conakry. Kogin yana kumbura kowace shekara lokacin damina, yana samar da filayen ruwa da fadama na cikin ruwa. Waɗannan filayen na ambaliyar mazaunan Nalu da mutanen Baga ne. Kimanin mil 40 (kilomita 64) a cikin gari shine garin Boké; mafi girma a kan kogi kuma babban cibiyar kasuwancin Guinea. A nan kogin ya fadi 100m kuma zurfin 1m. Daga nesa daga Boké, kogin mara ƙanƙan da iska yana ratsa ta cikin tsaunuka masu yawa tare da yawancin jerin hanzari da ƙananan gungun tsibirai zuwa ga asalinsa, haɗuwar ƙananan rafuka da yawa. Kafin shekarar 1840, wannan kogin ya kasance kasuwar bayi ga yan bautar Fulbe da ke jigilar bayi daga Imamancin Futa Jallon.