Gekko coi is a species of gecko, a lizard in the family Gekkonidae. The species is endemic to Sibuyan Island in the central Philippines.
The specific name, coi, honours Leonard Co, who is a Philippine botanist and conservation biologist.
The preferred natural habitat of G. coi is forest, at altitudes from sea level to . It has also been found in agricultural areas.
Adults of G. coi have a snout-to-vent length (SVL) of about .
G. coi is nocturnal.
G. coi is oviparous.