This key is designed for live specimens of the 21 frog species from the political Solomon Islands (excludes Bougainville). It is mainly for use with adult specimens but may be used for juveniles if body size is not used. We have included photographs or line drawings of the natural variation in most of the characters to help the user. We have also included photographs of each species and tried to incorporate the natural variation in morphology, particularly skin colour and patterning where applicable.