| Scientific name | Authorship | Rank | Status | Images | |
|---|---|---|---|---|---|
| Orygocera tectulata | (Meyrick, 1937) | species | Accepted | ||
| Orygocera thysanarcha | (Meyrick, 1918) | species | Accepted | ||
| Orygocera tricolorella | (Viette, 1958) | species | Accepted | ||
| Orygocera tryphoxantha | (Meyrick, 1930) | species | Accepted | ||
| Orygocera vadonella | (Viette, 1985) | species | Accepted | ||
| Osmanthedon domaticola | Agassiz & Kallies, 2018 | species | Accepted | ||
| Osminia namibiana | Kallies, 2004 | species | Accepted | ||
| Ostrinia damoalis | (Walker, 1859) | species | Synonym | ||
| Ostrinia endochlora | (Meyrick, 1935) | species | Synonym | ||
| Ostrinia erythrialis | (Hampson, 1913) | species | Accepted | ||
| Ostrinia furnacalis | (Guenée, 1854) | species | Accepted | ||
| Ostrinia incensa | (Meyrick, 1937) | species | Synonym | ||
| Ostrinia kodzukalis | (Matsumura, 1897) | species | Synonym | ||
| Ostrinia polygoni | (Dyar, 1905) | species | Synonym | ||
| Ostrinia salentialis | (Snellen, 1880) | species | Synonym | ||
| Ostrinia vastatrix | (Schultze, 1908) | species | Synonym | ||
| Otjipagapaga dentilinealis | (Hampson, 1906) | species | Accepted | ||
| Otjipagapaga prima | Mey, 2011 | species | Accepted | ||
| Otjipagapaga secundaria | Mey, 2011 | species | Accepted | ||
| Otpada recussa | Kiriakoff, 1965 | species | Accepted | ||
| Otroeda aino | (Bryk, 1915) | species | Accepted | ||
| Otroeda albida | (Jordan, 1924) | species | Misapplied | ||
| Otroeda cafra | (Drury, 1782) | species | Accepted | ||
| Otroeda catenata | (Jordan, 1924) | species | Accepted | ||
| Otroeda derozierae | László & Bouyer, 2023 | species | Accepted |