Strigidae Vigors, 1825
Otus alfredi (Hartert, 1897)
Otus alius Rasmussen, 1998
Otus angelinae (Finsch, 1912)
Otus bakkamoena Pennant, 1769
Otus balli (Hume, 1873)
Otus beccarii (Salvadori, 1876)
Otus brookii (Sharpe, 1892)
Otus brucei (Hume, 1872)
Otus capnodes (Gurney, 1889)
Otus centralis
Otus collari Lambert & Rasmussen, 1998
Otus elegans (Cassin, 1852)
Otus enganensis Riley, 1927
Otus everetti
Otus flammeolus (Kaup, 1852)
Otus fuliginosus (Sharpe, 1888)
Otus hartlaubi (Giebel, 1872)
Otus hoyi
Otus icterorhynchus (Shelley, 1873)
Otus insularis (Tristram, 1880)
Otus ireneae Ripley, 1966
Otus lambi
Otus lempiji
Otus lettia
Otus longicornis (Ogilvie-Grant, 1894)
Otus madagascariensis (A. Grandidier, 1867)
Otus magicus (S. Muller, 1841)
Otus manadensis (Quoy & Gaimard, 1830)
Otus mantananensis (Sharpe, 1892)
Otus mayottensis Benson, 1960
Otus megalotis (Walden, 1875)
Otus mentawi Chasen & Kloss, 1926
Otus mindorensis (J. Whitehead, 1899)
Otus mirus Ripley & Rabor, 1968
Otus moheliensis Lafontaine & Moulaert, 1998
Otus napensis
Otus nigrorum
Otus pauliani Benson, 1960
Otus pembaensis Pakenham, 1937
Otus roraimae
Otus rufescens (Horsfield, 1821)
Otus rutilus (Pucheran, 1849)
Otus sagittatus (Cassin, 1849)
Otus scops (Linnaeus, 1758)
Otus semitorques
Otus senegalensis (Swainson, 1837)
Otus siaoensis (Schlegel, 1873)
Otus silvicola (Wallace, 1864)
Otus socotranus
Otus spilocephalus (Blyth, 1846)
Otus sulaensis
Otus sunia (Hodgson, 1836)
Otus thilohoffmanni Warakagoda & Rasmussen, 2004
Otus umbra (Richmond, 1903)
Otus usta
Otus watsoni
