The dwarfgobies in the genus Eviota are currently represented by 111 valid described species, occurring throughout the Indo-Pacific Ocean except for the eastern Pacific region, mainly in coral-reef habitats. A dichotomous diagnostic key to 107 of these species is presented, with information on characters, type material, references for the original descriptions, distributions, and photographs of each species. All of the species described from the first, in 1871, up to April 2016 are included; four more described after that date are listed, but not included in the key.