Adinopsis klimaszewskii sp. n. from the banks of the Kavango River at Popa Falls in the Caprivi strip in Northern Namibia is described and illustrated. Type locality: Namibia, Kavango, Popa Falls, 18°07′S/21°35′E. Keywords: Insecta, Coleoptera, Staphylinidae, Aleocharinae, Deinopsini, Adinopsis, Arctogaea, Africa, Afrotropical (Ethiopian) region, Namibia, new species.