- Notocrypta pria
- Notocrypta quadrata
- Notocrypta renardi
- Notocrypta waigensis
- Nymphalis polychloros
-
Ochlodes bouddha
dark forest darter
-
Ochlodes siva
burmese forest darter
- Ochus subvittatus
- Ocybadistes ardea
- Ocybadistes flavovittata
- Ocybadistes papua
- Ocybadistes walkeri
- Ocybadistes zelda
-
Odina chrysomelaena
-
Odina cuneiformis
-
Odina decoratus
Zigzag Flat
-
Odina hieroglyphica
-
Odontoptilum abbreviata
-
Odontoptilum angulata
-
Odontoptilum corria
-
Odontoptilum pygela
- Oerane microthyrus
- Ogyris meeki
- Ogyris zosine
- Onryza meiktila
-
Onryza siamica
siamese brush ace
- Oreixenica correae
- Oreixenica kershawi
- Oreixenica lathoniella
- Oreolyce archena
- Oriens alfurus
- Oriens californica
- Oriens fons
- Oriens gola
-
Oriens goloides
ceylon dartlet
- Oriens paragola
-
Orinoma damaris
tigerbrown
- Ornithoptera aesacus Ney, 1903
- Ornithoptera alexandrae Rothschild, 1907
- Ornithoptera chimaera (Rothschild, 1904)
- Ornithoptera croesus
- Ornithoptera goliath Oberthür, 1888
- Ornithoptera meridionalis Rothschild, 1897
- Ornithoptera paradisea
- Ornithoptera priamus (Linnaeus, 1758)
- Ornithoptera rothschildi (Kenrick, 1911)
- Ornithoptera tithonus (de Haan, 1840)
-
Ornithoptera victoriae (Gray, 1856)
Queen Victoria's birdwing
- Orsotriaena jopas
- Orsotriaena medus