Diplonychus is a genus of true bugs belonging to the family Belostomatidae.

The species of this genus are found in Southern Africa, Southeastern Asia and Australia.

Species:

• Diplonychus annulatus (Fabricius, 1781)
• Diplonychus eques (Dufour, 1863)
• Diplonychus esakii Miyamoto & Lee, 1966
• Diplonychus heeri Polhemus, 1995
• Diplonychus rusticus (Fabricius, 1871)
• Diplonychus stali (Mayr, 1871)
• Sphaerodema microcephalum Zhang et al., 1994

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