Hyperolius brachiofasciatus is a species of frog in the family Hyperoliidae. It is known from its type locality, Ngoto in southwestern Central African Republic, from another locality in central Republic of the Congo, and from a number of localities in central Democratic Republic of the Congo. However, as of 2014, IUCN SSC Amphibian Specialist Group considers records other than the one from the type locality erroneous, and that this species likely is a synonym of some other species. Common name Ngoto reed frog has been proposed for it.
Adult males measure 22–28 mm (0.9–1.1 in) and adult females 24–29 mm (0.9–1.1 in) in snout–vent length. Phase "J" individuals have light brown dorsum, often with darker spots that sometimes form an hourglass pattern. The border between the dorsal colour and the dark, irregular lateral band is sharp. The canthal area of head is dark; a dark bar is present between the eyes, with a broad apex pointing backwards. The tibia are light brown with a dark oblique band. Phase "F" individuals have dark dorsum with light spots or with dark and light marbling.