| Ochlodes agricola subsp. agricola (Boisduval, 1852) |
| Ochlodes samenta Dyar, 1914 |
| Ochlodes sylvanoides (Boisduval, 1852) |
| Ochlodes sylvanoides subsp. sylvanoides (Boisduval, 1852) |
| Ocyba Lindsey, 1925 |
| Ocyba calathana (Hewitson, 1868) |
| Ocyba calathana subsp. calanus (Godman & Salvin, 1894) |
| Oeonus Godman, 1900 |
| Oeonus pyste Godman, 1900 |
| Onenses Godman & Salvin, 1895 |
| Onenses hyalophora (R. Felder, 1869) |
| Onespa Steinhauser, 1974 |
| Onespa gala (Godman, 1900) |
| Onespa nubis Steinhauser, 1974 |
| Onophas Godman, 1900 |
| Onophas columbaria (Herrich-Schäffer, 1870) |
| Orses Godman, 1901 |
| Orses cynisca (Swainson, 1821) |
| Orthos Evans, 1955 |
| Orthos gabina (Godman, 1900) |