• Oncotylus (Cylindromelus) setulosus (Herrich-Schaeffer, 1837)
• Oncotylus (Oncotylus) affinis Jakovlev, 1882
• Oncotylus (Oncotylus) anatolicus Wagner, 1969
• Oncotylus (Oncotylus) basicornis Horváth, 1901
• Oncotylus (Oncotylus) bolivari Reuter, 1900
• Oncotylus (Oncotylus) desertorum Reuter, 1879
• Oncotylus (Oncotylus) ferulae V.G. Putshkov, 1975
• Oncotylus (Oncotylus) horvathi Reuter, 1901
• Oncotylus (Oncotylus) nigdensis Linnavuori, 1961
• Oncotylus (Oncotylus) nigricornis Saunders, 1876
• Oncotylus (Oncotylus) persicus Reuter, 1879
• Oncotylus (Oncotylus) punctiger Reuter, 1894
• Oncotylus (Oncotylus) punctipes Reuter, 1875
• Oncotylus (Oncotylus) pyrethri (Becker, 1864)
• Oncotylus (Oncotylus) reuteri Reuter, 1879
• Oncotylus (Oncotylus) viridiflavus (Goeze, 1778)
• Oncotylus (Oncotylus) viridiflavus longipes Wagner, 1954
• Oncotylus (Oncotylus) viridiflavus viridiflavus (Goeze, 1778)
• Oncotylus (Oncotylus) vitticeps Reuter, 1879
• Oncotylus Fieber, 1858
• Oncylocotis basalis (Westwood, 1838)
• Oncylocotis basalis basalis (Westwood, 1838)
• Oncylocotis occipitalis (Jeannel, 1942)
• Oncylocotis shirozui Miyamoto, 1965
• Onomaus coloratus Zheng & Liu, 1992
• Onomaus lautus (Uhler, 1896)
• Onomaus tenuis L.Y. Zheng, 2004
• Onychomesa gokani Ishikawa, 2000
• Onychomesa sauteri Wygodzinsky, 1966
• Onychotrechus esakii Andersen, 1980
• Onychotrechus rhexenor Kirkaldy, 1903
• Opistholeptus burmanus (Distant, 1903)
• Opistholeptus burmanus burmanus (Distant, 1903)
• Opistholeptus pallidus (Hesse, 1925)
• Opisthotaenia (Opisthotaenia) fulvipes Reuter, 1901
• Opisthotaenia (Opisthotaenia) glauca Seidenstücker, 1968
• Opisthotaenia (Ribesophylus) striata (Wagner, 1965)
• Opisthotaenia Reuter, 1901
• Opistoplatys majusculus Distant, 1903
• Opistoplatys mustela Miller, 1954
• Opistoplatys ornatus (Distant, 1903)
• Opistoplatys perakensis Miller, 1940
• Opistoplatys seclusus Miller, 1954
• Opistoplatys sorex Horváth, 1879
• Oplistochilus contestor (Kiritshenko, 1966)
• Oplistochilus pallidus Jakovlev, 1887
• Oplistochilus subcarinatus Hoberlandt, 1984
• Oploscelis Mulsant & Rey, 1852
• Opocrates Horváth, 1883
• Opuna annulata (Knight, 1935)