Mariko may refer to:
Places Mariko-juku (鞠子宿), a post station along the Tōkaidō Mariko, Mali Mariko (crater), an impact crater on Venus
People MC Mariko (Mari Pajalahti, born 1979), Finnish music group Kwan Bourama Mariko (born 1979), a Malian judoka Oumar Mariko (born 1959), a Malian doctor and politician Mariko (given name)