The Bloody Bay poison frog (Mannophryne olmonae) is a species of frog in the family Aromobatidae.
It is endemic to the island of Tobago in the Republic of Trinidad and Tobago. Its natural habitats are subtropical or tropical moist lowland forest and streams mainly in the northeastern mountainous half of the island. This classified "Vulnerable" species according to the IUCN Global Amphibian Assessment conducted a survey and that based on the population that surveyed out over 23 extralimital populations and has been found in a variety of forest that included degraded secondary forest and abandoned cacao plantations.