Guibemantis bicalcaratus is a species of frog in the family Mantellidae. It is endemic to Madagascar. Its natural habitats are subtropical or tropical moist lowland forests, subtropical or tropical moist montane forests, and plantations . It is threatened by habitat loss.
Guibemantis bicalcaratus measures from 22 to 26 mm in length for males, and 24 to 29 mm for females. Its back is clear-brown to yellowish, with small dark spots and sometimes a clear line on each side of the back. A brown line is often present from the snout to the eardrum. Its belly is uniformly clear.