Peltodytes is a genus of water beetle which is native to the Nearctic, Europe, the Near East, and North Africa. Peltodytes can generally be differentiated from the similar Haliplus by the presence of a pair of spots on the posterior margin of the pronotum. The genus Peltodytes contains the following species:

• Peltodytes alluaudi Guignot, 1936
• Peltodytes bradleyi Young, 1961
• Peltodytes caesus (Duftschmid, 1805)
• Peltodytes callosus (LeConte, 1852)
• Peltodytes congoensis Zimmermann, 1924
• Peltodytes coomani Peschet, 1923
• Peltodytes darlingtoni Young, 1961
• Peltodytes dauricus Zimmermann, 1924
• Peltodytes dietrichi Young, 1961
• Peltodytes dispersus Roberts, 1913
• Peltodytes dunavani Young, 1961
• Peltodytes duodecimpunctatus (Say, 1823)
• Peltodytes edentulus (LeConte, 1863)
• Peltodytes festivus (Wehncke, 1876)
• Peltodytes floridensis Matheson, 1912
• Peltodytes intermedius (Sharp, 1873)
• Peltodytes lengi Roberts, 1913
• Peltodytes litoralis Matheson, 1912
• Peltodytes mexicanus (Wehncke, 1883)
• Peltodytes muticus (LeConte, 1863)
• Peltodytes nodieri Guignot, 1936
• Peltodytes oppositus Roberts, 1913
• Peltodytes ovalis Zimmermann, 1924
• Peltodytes pedunculatus (Blatchley, 1910)
• Peltodytes pekinensis Vondel, 1992
• Peltodytes quadratus Régimbart, 1895
• Peltodytes rotundatus (Aubé, 1836)
• Peltodytes sexmaculatus Roberts, 1913
• Peltodytes shermani Roberts, 1913
• Peltodytes simplex (LeConte, 1852)
• Peltodytes sinensis (Hope, 1845)
• Peltodytes speratus Régimbart, 1906
• Peltodytes sumatrensis Régimbart, 1885
• Peltodytes tamaulipensis Young, 1964
• Peltodytes tortulosus Roberts, 1913

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