Leptopelis crystallinoron is a species of frog in the family Arthroleptidae. It is endemic to Gabon and only known from the area its type locality near the Barrage de Tchimbélé in the central Monts de Cristal (Crystal Mountains). Only one specimen was known until five specimens were captured in the Crystal Mountains National Park in 2009. It is probable that this species is endemic to the Monts de Cristal and that its range extends into Equatorial Guinea.