Cryptothylax greshoffii is a species of frog in the Hyperoliidae family. It is found in Angola, Cameroon, Central African Republic, Democratic Republic of the Congo, Equatorial Guinea, Gabon, and possibly Republic of the Congo. Its natural habitats are subtropical or tropical moist lowland forests, subtropical or tropical moist shrubland, rivers, swamps, freshwater lakes, freshwater marshes, intermittent freshwater marches, rural gardens, heavily degraded former forest, and aquaculture ponds.
