Hainanpotamon is a genus of freshwater crabs, containing the following species:

• Hainanpotamon auriculatum Yeo & Naruse, 2008
• Hainanpotamon daiae Yeo & Naruse, 2008
• Hainanpotamon directum Yeo & Naruse, 2008
• Hainanpotamon fuchengense Dai, 1995
• Hainanpotamon helense Dai, 1995
• Hainanpotamon orientale (Parisi, 1916)

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 1972. The first available name is therefore Hainanpotamon, independently established by Dai in 1995.

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