Oscaecilia osae is a species of caecilian in the family Caeciliidae. It is endemic to Costa Rica and is only known from the Golfo Dulce area, on the Pacific Ocean side of Costa Rica. The specific name osae refers to its type locality, the airstrip at La Sirena, being located on the Osa Peninsula. It is also known as the airstrip caecilia or airstrip caecilian.