Hydrodessus is a genus of beetles in the family Dytiscidae, containing the following species:
Hydrodessus amazonensis Spangler, 1966Hydrodessus angularis Young, 1970Hydrodessus biguttatus (Guignot, 1957)Hydrodessus brasiliensis (Guignot, 1957)Hydrodessus fragrans Spangler, 1985Hydrodessus jethoeae Makhan, 1994Hydrodessus nanayensis Spangler, 1966Hydrodessus octospilus (Guignot, 1957)Hydrodessus peloteretes Spangler, 1985Hydrodessus pereirai (Guignot, 1957)Hydrodessus phyllisae Spangler, 1985Hydrodessus rattanae Makhan, 1994Hydrodessus robinae Spangler, 1985Hydrodessus siolii J.Balfour-Browne, 1953Hydrodessus soekhnandanae Makhan, 1994Hydrodessus spanus Spangler, 1985Hydrodessus surinamensis Young, 1970