The Convention on Biological Diversity (CBD) recognizes protected areas (PAs) as instrumental in fostering the attainment of international targets. At the end of the Rio 20 in Brazil, this paper focuses on PAs created in Cameroon since 1992. Statistics from the World Database on Protected Areas (WDPA), and other sources illustrate that 15 PAs covering 1 901 739 hectares have been created and 13 others enclosing 666 026 hectares are at different stages of creation. They are 11 national parks covering 1 806 928 hectares representing 95% and 4 sanctuaries wrapping up 5% (94 811 hectares). The tropical humid ecosystem has 56% of the area protected; the tropical wooded savannah 30% and the montane ecosystem 7%. PAs overlap significantly (96%) with Key Biodiversity Areas suggesting they are conferring some protection on biodiversity.