The Puerto Rican crested toad (Peltophryne lemur), also known as the Puerto Rican toad or lowland Caribbean toad, is a species of toad found only in Puerto Rico and the Virgin Islands. It is the only species of toad native to Puerto Rico and the Virgin Islands. The species formerly occurred in Virgin Gorda and along the southern and northern karst in Puerto Rico. It is listed as a threatened by the US Fish and Wildlife Service due to habitat loss and introduced species. At one period of time it was believed to be extinct until it was rediscovered in 1966. The IUCN has the species listed as endangered.

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