• Opuna ryandi Schuh, 1984
• Oreocapsus immundus Linnavuori, 1975
• Oreocapsus vanharteni Linnavuori & Al-Safadi, 1993
• Oreolygus viridipennis Linnavuori, 1975
• Oressibia Kiritshenko, 1926
• Orientocapsus aquilus Yasunaga & Schwartz, 2007
• Orientocapsus bicoloratus Yasunaga & Schwartz, 2007
• Orientocapsus cheroti Yasunaga & Schwartz, 2007
• Orientocapsus picinus (Lu & Zheng, 1998)
• Orientocapsus zhangi (Lu & Zheng, 1998)
• Orientomiris chinensis (X.Z. Li & Zheng, 1991)
• Orientomiris erythromelas Yasunaga, 1997
• Orientomiris eurytus (Yasunaga, 1988)
• Orientomiris flavicollaris Yasunaga, 1997
• Orientomiris nigripennis Yasunaga, 1997
• Orientomiris nigripes Yasunaga, 1997
• Orientomiris piceus (Reuter, 1906)
• Orientomiris pronotalis (X.Z. Li & Zheng, 1991)
• Orientomiris pseudopronotalis (X.Z. Li & Zheng, 1991)
• Orientomiris rubripedus (X.Z. Li & Zheng, 1991)
• Orientomiris sinicus (Walker, 1873)
• Orientomiris tenuicornis (X.Z. Li & Zheng, 1991)
• Orientomiris tricolor (Scott, 1880)
• Orientomiris yaeyamanus Yasunaga, 1997
• Orientomiris yunnananus (X.Z. Li & Zheng, 1991)
• Orientomiris zoui (X.Z. Li & Zheng, 1991)
• Orieotrechus aeruginosus (Distant, 1903)
• Origanaus tibetanus L.Y. Zheng & Jin, 1990
• Orius (Dimorphella) agilis (Flor, 1860)
• Orius (Dimorphella) albidipennis (Reuter, 1884)
• Orius (Dimorphella) canariensis Wagner, 1952
• Orius (Dimorphella) neimongolanus Bu & L.Y. Zheng, 2001
• Orius (Dimorphella) sibiricus Wagner, 1952
• Orius (Heterorius) bulgaconus Ghauri, 1972
• Orius (Heterorius) chinensis Bu & L.Y. Zheng, 2001
• Orius (Heterorius) gladiatus Zheng, 1982
• Orius (Heterorius) hibiscus Yasunaga, 2019
• Orius (Heterorius) horvathi (Reuter, 1884)
• Orius (Heterorius) laticollis (Reuter, 1884)
• Orius (Heterorius) laticollis discolor (Reuter, 1884)
• Orius (Heterorius) laticollis laticollis (Reuter, 1884)
• Orius (Heterorius) majusculus (Reuter, 1879)
• Orius (Heterorius) minutus (Linnaeus, 1758)
• Orius (Heterorius) nagaii Yasunaga, 1993
• Orius (Heterorius) sauteri (Poppius, 1909)
• Orius (Heterorius) strigicollis (Poppius, 1915)
• Orius (Heterorius) vicinus (Ribaut, 1923)
• Orius (Microtrachelia) retamae (Noualhier, 1893)
• Orius (Orius) bifilarus Ghauri, 1972
• Orius (Orius) flagellum Linnavuori, 1968