Falcaustra samarensis n. sp. (Ascaridida, Kathlaniidae) from the intestines of Megophrys stejnegeri Taylor 1920 (Anura, Megophryidae) is described and illustrated. Falcaustra samarensis n. sp. represents the one hundred fourth species assigned to the genus and the thirty-seventh Oriental species. It is distinguished from other Oriental species by the pattern of caudal papillae (8 precloacal, 2 adcloacal, 10 postcloacal, and 1 median), length of spicules (2,050–3,300 µm) and presence of 1 pseudosucker. Megophrys stejnegeri was also found to harbor 2 additional species of Nematoda, adults of Aplectana ranae and Batrachostrongylus longispiculus. Megophrys stejnegeri represents a new host record for each of these helminth species.