Perbrinckia is a genus of freshwater crabs of the family Gecarcinucidae that is endemic to Sri Lanka, named after Per Brinck. Its natural habitats are subtropical or tropical moist lowland forests, subtropical or tropical swamps, and rivers. It contains 14 species, most of which are included on the IUCN Red List as critically endangered species (CR) or vulnerable species (VU) because they are threatened by habitat loss; only one species is of least concern (LC).

Species Perbrinckia cracens Ng, 1995 Perbrinckia enodis (Kinglsey, 1880) Perbrinckia fenestra Bahir & Ng, 2005 Perbrinckia fido Ng, 1995 Perbrinckia gabadagei Bahir & Ng, 2005 Perbrinckia glabra Ng, 1995 Perbrinckia integra Ng, 1995 Perbrinckia morayensis Ng & Tay, 2001 Perbrinckia punctata Ng, 1995 Perbrinckia quadratus Ng & Tay, 2001 Perbrinckia rosae Bahir & Ng, 2005 Perbrinckia scansor (Ng, 1995) Perbrinckia scitula Ng, 1995 Perbrinckia uva Bahir, 1998

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