Hainanpotamon is a genus of freshwater crabs, containing the following species:Hainanpotamon auriculatum Yeo & Naruse, 2008Hainanpotamon daiae Yeo & Naruse, 2008Hainanpotamon directum Yeo & Naruse, 2008Hainanpotamon fuchengense Dai, 1995Hainanpotamon glabrum (Dang, 1967)Hainanpotamon helense Dai, 1995Hainanpotamon orientale (Parisi, 1916)Hainanpotamon rubrum (Dang & Tran, 1992)Hainanpotamon vietnamicum (Dang & Hô, 2002)The genus was originally described in 1975 by Dang as Orientalia but that name was a junior homonym of the mollusc genus Orientalia, established by Radoman in 1975.