Proceratophrys dibernardoi is a newly described species belonging to the Proceratophrys cristiceps group. Herein, we describe the external morphology of tadpoles of P. dibernardoi. Although external larval morphology of P. cristiceps group members is quite similar, the tadpole of P. dibernardoi may be distinguished by a combination of morphological traits, such as body shape that is elliptical in dorsal view and depressed in lateral view; a snout that is rounded in dorsal and lateral views; small, reniform nares with a small marginal rim; and a spiracle with its centripetal wall completely fused to the body wall. The oral disc is ventrally located, with lateroventral emarginations; its tooth row formula is 2(2)/3(1).