Gastrotheca griswoldi is a species of frog in the family Hemiphractidae. The species is endemic to central Peru.
G. griswoldi is known from the Huánuco, Junín, and Pasco Regions of Peru.
The specific name, griswoldi, honours John Augustus Griswold Jr (1912–1991), an American aviculturist and ornithologist.
The "common name", Griswold's marsupial frog, has been coined for G. griswoldi.
The natural habitats of G. griswoldi are dry puna grasslands, including traditionally cultivated arable land, at elevations of 3000m-4020mm (10,000feet-13,190feetm) asl.
G. griswoldi is a relatively abundant species that does not appear to face major threats.