Abstract. Munawaroh E, Rahayu S. 2020. The diversity of Hoya species (Apocynaceae) in Bukit Barisan Selatan National Park (BBSNP) and their conservation in the Liwa Botanical Gardens, West Lampung, Lampung. Pros Sem Nas Masy Biodiv Indon 6: 610-617. Bukit Barisan Selatan National Park is a representative of the Bukit Barisan mountain range which consists of mangrove forest, coastal forest, tropical palms and mountain ranges in Sumatera. Bukit Barisan National Park stretches from the Province Bengkulu to the north, following the ridge of the Bukit Barisan mountains extending south, to Tanjung Cina-Belimbing at the southern tip of Lampung Province. This National Park is also a habitat for unique and rare flowering plants, including Hoya spp. Inventory and exploration of Hoya Plants in the Bukit Barisan Selatan National Park, Lampung Province has been carried out with an exploration method that is exploring the area representing habitat for Hoya spp. We found 7 species of Hoya in the Bukit Barisan Selatan National Park. There were: Hoya cf. rhodostele, Hoya coriacea, Hoya coronaria, Hoya micrantha, Hoya multiflora, Hoya purpurea-fusca, and Hoya vitellinoides. All Hoya plant materials are conserved ex-situ in the Liwa Botanical Garden.