Pristimantis pruinatus is a species of frog in the family Craugastoridae. It is endemic to Venezuela and only known from its type locality, the summit of Cerro Yaví (2,150 m (7,050 ft) above sea level), a sandstone table-top mountain (tepui) in the Amazonas State. The specific name pruinatus refers to the frosted appearance of this frog when alive and is derived from the Latin pruina (=frost) and -atus (=pertaining to).