| Northern Saw-whet Owl | Aegolius acadicus (103) |  |
| Boreal Owl | Aegolius funereus (32) |  |
| Buff-fronted Owl | Aegolius harrisii (9) |  |
| Unspotted Saw-whet Owl | Aegolius ridgwayi (5) |  |
| African Long-eared Owl | Asio abyssinicus (7) |  |
| Marsh Owl | Asio capensis (15) |  |
| Short-eared Owl | Asio flammeus (218) |  |
| Madagascar Long-eared Owl | Asio madagascariensis (9) |  |
| Long-eared Owl | Asio otus (157) |  |
| Stygian Owl | Asio stygius (14) |  |
| Forest Owlet | Athene blewitti (2) |  |
| Spotted Owlet | Athene brama (79) |  |
| Burrowing Owl | Athene cunicularia (234) |  |
| Little Owl | Athene noctua (183) |  |
| Spotted Eagle-owl | Bubo africanus (53) |  |
| Pharaoh Eagle-owl | Bubo ascalaphus (7) |  |
| Rock Eagle-owl | Bubo bengalensis (16) |  |
| Eurasian Eagle-owl | Bubo bubo (33) |  |
| Cape Eagle-owl | Bubo capensis (12) |  |
| Grayish Eagle-owl | Bubo cinerascens (18) |  |
| Dusky Eagle-owl | Bubo coromandus (1) |  |
| Verreaux's Eagle-owl | Bubo lacteus (63) |  |
| Akun Eagle-owl | Bubo leucostictus (1) |  |
| Spot-bellied Eagle-owl | Bubo nipalensis (7) |  |
| Philippine Eagle-owl | Bubo philippensis (9) |  |
| Fraser's Eagle-owl | Bubo poensis (7) |  |
| Snowy Owl | Bubo scandiacus (195) |  |
| Shelley's Eagle-owl | Bubo shelleyi (0) | Try Google, Avibase or Flickr Bubo shelleyi |
| Barred Eagle-owl | Bubo sumatranus (6) |  |
| Great Horned Owl | Bubo virginianus (245) |  |
| Usambara Eagle-owl | Bubo vosseleri (0) | Try Google, Avibase or Flickr Bubo vosseleri |
| Rufous-banded Owl | Ciccaba albitarsis (8) |  |
| Black-banded Owl | Ciccaba huhula (7) |  |
| Black-and-white Owl | Ciccaba nigrolineata (25) |  |
| Mottled Owl | Ciccaba virgata (35) |  |
| Albertine Owlet | Glaucidium albertinum (0) | Try Google, Avibase or Flickr Glaucidium albertinum |
| Yungas Pygmy-owl | Glaucidium bolivianum (4) |  |
| Ferruginous Pygmy-owl | Glaucidium brasilianum (80) |  |
| Collared Owlet | Glaucidium brodiei (21) |  |
| African Barred Owlet | Glaucidium capense (16) |  |
| Chestnut Owlet | Glaucidium castaneum (0) | Try Google, Avibase or Flickr Glaucidium castaneum |
| Javan Owlet | Glaucidium castanopterum (0) | Try Google, Avibase or Flickr Glaucidium castanopterum |
| Chestnut-backed Owlet | Glaucidium castanotum (7) |  |
| Costa Rican Pygmy-owl | Glaucidium costaricanum (10) |  |
| Asian Barred Owlet | Glaucidium cuculoides (38) |  |
| Northern Pygmy-owl | Glaucidium gnoma (61) |  |
| Central American Pygmy-owl | Glaucidium griseiceps (8) |  |
| Amazonian Pygmy-owl | Glaucidium hardyi (4) |  |
| Andean Pygmy-owl | Glaucidium jardinii (14) |  |
| Least Pygmy-owl | Glaucidium minutissimum (9) |  |
| Pernambuco Pygmy-owl | Glaucidium mooreorum (0) | Try Google, Avibase or Flickr Glaucidium mooreorum |
| Austral Pygmy-owl | Glaucidium nana (25) |  |
| Cloud-forest Pygmy-owl | Glaucidium nubicola (3) |  |
| Colima Pygmy-owl | Glaucidium palmarum (3) |  |
| Subtropical Pygmy-owl | Glaucidium parkeri (0) | Try Google, Avibase or Flickr Glaucidium parkeri |
| Eurasian Pygmy-owl | Glaucidium passerinum (25) |  |
| Pearl-spotted Owlet | Glaucidium perlatum (46) |  |
| Peruvian Pygmy-owl | Glaucidium peruanum (13) |  |
| Jungle Owlet | Glaucidium radiatum (27) |  |
| Tamaulipas Pygmy-owl | Glaucidium sanchezi (1) |  |
| Cuban Pygmy-owl | Glaucidium siju (16) |  |
| Sjostedt's Owlet | Glaucidium sjostedti (4) |  |
| Red-chested Owlet | Glaucidium tephronotum (1) |  |
| Maned Owl | Jubula lettii (0) | Try Google, Avibase or Flickr Jubula lettii |
| Blakiston's Fish-owl | Ketupa blakistoni (17) |  |
| Tawny Fish-owl | Ketupa flavipes (8) |  |
| Buffy Fish-owl | Ketupa ketupu (23) |  |
| Brown Fish-owl | Ketupa zeylonensis (37) |  |
| Crested Owl | Lophostrix cristata (29) |  |
| Bare-legged Owl | Margarobyas lawrencii (10) |  |
| White-throated Screech-owl | Megascops albogularis (3) |  |
| Eastern Screech-owl | Megascops asio (70) |  |
| Black-capped Screech-owl | Megascops atricapilla (9) |  |
| Bearded Screech-owl | Megascops barbarus (2) |  |
| Tropical Screech-owl | Megascops choliba (68) |  |
| Bare-shanked Screech-owl | Megascops clarkii (12) |  |
| Colombian Screech-owl | Megascops colombianus (3) |  |
| Pacific Screech-owl | Megascops cooperi (13) |  |
| Vermiculated Screech-owl | Megascops guatemalae (19) |  |
| Montane Forest Screech-owl | Megascops hoyi (0) | Try Google, Avibase or Flickr Megascops hoyi |
| Rufescent Screech-owl | Megascops ingens (4) |  |
| Western Screech-owl | Megascops kennicottii (30) |  |
| Koepcke's Screech-owl | Megascops koepckeae (0) | Try Google, Avibase or Flickr Megascops koepckeae |
| Cloud-forest Screech-owl | Megascops marshalli (0) | Try Google, Avibase or Flickr Megascops marshalli |
| Puerto Rican Screech-owl | Megascops nudipes (1) |  |
| Cinnamon Screech-owl | Megascops petersoni (2) |  |
| Peruvian Screech-owl | Megascops roboratus (2) |  |
| Long-tufted Screech-owl | Megascops sanctaecatarinae (13) |  |
| Balsas Screech-owl | Megascops seductus (0) | Try Google, Avibase or Flickr Megascops seductus |
| Whiskered Screech-owl | Megascops trichopsis (9) |  |
| Tawny-bellied Screech-owl | Megascops watsonii (11) |  |
| Santa Marta Screech-owl | Megascops gilesi (3) |  |
| Elf Owl | Micrathene whitneyi (11) |  |
| Fearful Owl | Nesasio solomonensis (0) | Try Google, Avibase or Flickr Nesasio solomonensis |
| Andaman Boobook | Ninox affinis (2) |  |
| Togian Boobook | Ninox burhani (1) |  |
| Barking Owl | Ninox connivens (14) |  |
| Tanimbar Boobook | Ninox forbesi (0) | Try Google, Avibase or Flickr Ninox forbesi |
| Halmahera Boobook | Ninox hypogramma (0) | Try Google, Avibase or Flickr Ninox hypogramma |
| Cinnabar Boobook | Ninox ios (1) |  |
| Solomons Boobook | Ninox jacquinoti (0) | Try Google, Avibase or Flickr Ninox jacquinoti |
| Northern Boobook | Ninox japonica (4) |  |
| Camiguin Boobook | Ninox leventisi (0) | Try Google, Avibase or Flickr Ninox leventisi |
| Manus Boobook | Ninox meeki (0) | Try Google, Avibase or Flickr Ninox meeki |
| Mindoro Boobook | Ninox mindorensis (0) | Try Google, Avibase or Flickr Ninox mindorensis |
| Christmas Island Boobook | Ninox natalis (2) |  |
| Southern Boobook | Ninox novaeseelandiae (35) |  |
| Hume's Boobook | Ninox obscura (0) | Try Google, Avibase or Flickr Ninox obscura |
| Ochre-bellied Boobook | Ninox ochracea (14) |  |
| New Britain Boobook | Ninox odiosa (1) |  |
| Luzon Boobook | Ninox philippensis (4) |  |
| Speckled Boobook | Ninox punctulata (5) |  |
| Chocolate Boobook | Ninox randi (2) |  |
| Sulu Boobook | Ninox reyi (0) | Try Google, Avibase or Flickr Ninox reyi |
| Sumba Boobook | Ninox rudolfi (1) |  |
| Rufous Owl | Ninox rufa (16) |  |
| Cebu Boobook | Ninox rumseyi (0) | Try Google, Avibase or Flickr Ninox rumseyi |
| Brown Boobook | Ninox scutulata (31) |  |
| Mindanao Boobook | Ninox spilocephala (0) | Try Google, Avibase or Flickr Ninox spilocephala |
| Romblon Boobook | Ninox spilonotus (0) | Try Google, Avibase or Flickr Ninox spilonotus |
| Hantu Boobook | Ninox squamipila (0) | Try Google, Avibase or Flickr Ninox squamipila |
| Powerful Owl | Ninox strenua (48) |  |
| Least Boobook | Ninox sumbaensis (2) |  |
| White-browed Owl | Ninox superciliaris (14) |  |
| Papuan Boobook | Ninox theomacha (1) |  |
| Bismarck Boobook | Ninox variegata (0) | Try Google, Avibase or Flickr Ninox variegata |
| Flores Scops-owl | Otus alfredi (1) |  |
| Nicobar Scops-owl | Otus alius (0) | Try Google, Avibase or Flickr Otus alius |
| Javan Scops-owl | Otus angelinae (1) |  |
| Indian Scops-owl | Otus bakkamoena (34) |  |
| Andaman Scops-owl | Otus balli (3) |  |
| Biak Scops-owl | Otus beccarii (0) | Try Google, Avibase or Flickr Otus beccarii |
| Rajah Scops-owl | Otus brookii (2) |  |
| Pallid Scops-owl | Otus brucei (11) |  |
| Anjouan Scops-owl | Otus capnodes (0) | Try Google, Avibase or Flickr Otus capnodes |
| Sangihe Scops-owl | Otus collari (2) |  |
| Ryukyu Scops-owl | Otus elegans (8) |  |
| Enggano Scops-owl | Otus enganensis (7) |  |
| Everett's Scops-owl | Otus everetti (1) |  |
| Palawan Scops-owl | Otus fuliginosus (2) |  |
| Giant Scops-owl | Otus gurneyi (2) |  |
| Sao Tome Scops-owl | Otus hartlaubi (1) |  |
| Sandy Scops-owl | Otus icterorhynchus (0) | Try Google, Avibase or Flickr Otus icterorhynchus |
| Seychelles Scops-owl | Otus insularis (0) | Try Google, Avibase or Flickr Otus insularis |
| Sokoke Scops-owl | Otus ireneae (2) |  |
| Rinjani Scops-owl | Otus jolandae (3) |  |
| Sunda Scops-owl | Otus lempiji (10) |  |
| Collared Scops-owl | Otus lettia (15) |  |
| Luzon Scops-owl | Otus longicornis (2) |  |
| Torotoroka Scops-owl | Otus madagascariensis (8) |  |
| Moluccan Scops-owl | Otus magicus (3) |  |
| Sulawesi Scops-owl | Otus manadensis (7) |  |
| Mantanani Scops-owl | Otus mantananensis (2) |  |
| Mayotte Scops-owl | Otus mayottensis (0) | Try Google, Avibase or Flickr Otus mayottensis |
| Philippine Scops-owl | Otus megalotis (2) |  |
| Mentawai Scops-owl | Otus mentawi (7) |  |
| Mindoro Scops-owl | Otus mindorensis (0) | Try Google, Avibase or Flickr Otus mindorensis |
| Mindanao Scops-owl | Otus mirus (0) | Try Google, Avibase or Flickr Otus mirus |
| Moheli Scops-owl | Otus moheliensis (1) |  |
| Negros Scops-owl | Otus nigrorum (0) | Try Google, Avibase or Flickr Otus nigrorum |
| Arabian Scops-owl | Otus pamelae (0) | Try Google, Avibase or Flickr Otus pamelae |
| Comoro Scops-owl | Otus pauliani (0) | Try Google, Avibase or Flickr Otus pauliani |
| Pemba Scops-owl | Otus pembaensis (1) |  |
| Reddish Scops-owl | Otus rufescens (2) |  |
| Malagasy Scops-owl | Otus rutilus (21) |  |
| White-fronted Scops-owl | Otus sagittatus (8) |  |
| European Scops-owl | Otus scops (29) |  |
| Japanese Scops-owl | Otus semitorques (2) |  |
| African Scops-owl | Otus senegalensis (35) |  |
| Wallace's Scops-owl | Otus silvicola (0) | Try Google, Avibase or Flickr Otus silvicola |
| Socotra Scops-owl | Otus socotranus (0) | Try Google, Avibase or Flickr Otus socotranus |
| Mountain Scops-owl | Otus spilocephalus (2) |  |
| Oriental Scops-owl | Otus sunia (13) |  |
| Serendib Scops-owl | Otus thilohoffmanni (7) |  |
| Simeulue Scops-owl | Otus umbra (5) |  |
| Striped Owl | Pseudoscops clamator (25) |  |
| Jamaican Owl | Pseudoscops grammicus (3) |  |
| Flammulated Owl | Psiloscops flammeolus (15) |  |
| Southern White-faced Owl | Ptilopsis granti (18) |  |
| Northern White-faced Owl | Ptilopsis leucotis (19) |  |
| Tawny-browed Owl | Pulsatrix koeniswaldiana (23) |  |
| Band-bellied Owl | Pulsatrix melanota (2) |  |
| Spectacled Owl | Pulsatrix perspicillata (54) |  |
| Palau Owl | Pyrroglaux podargina (0) | Try Google, Avibase or Flickr Pyrroglaux podargina |
| Vermiculated Fishing-owl | Scotopelia bouvieri (0) | Try Google, Avibase or Flickr Scotopelia bouvieri |
| Pel's Fishing-owl | Scotopelia peli (21) |  |
| Rufous Fishing-owl | Scotopelia ussheri (0) | Try Google, Avibase or Flickr Scotopelia ussheri |
| Tawny Owl | Strix aluco (77) |  |
| Omani Owl | Strix butleri (0) | Try Google, Avibase or Flickr Strix butleri |
| Chaco Owl | Strix chacoensis (3) |  |
| Pere David's Owl | Strix davidi (2) |  |
| Fulvous Owl | Strix fulvescens (3) |  |
| Desert Owl | Strix hadorami (0) | Try Google, Avibase or Flickr Strix hadorami |
| Rusty-barred Owl | Strix hylophila (9) |  |
| Brown Wood-owl | Strix leptogrammica (16) |  |
| Great Gray Owl | Strix nebulosa (188) |  |
| Himalayan Owl | Strix nivicolum (1) |  |
| Spotted Owl | Strix occidentalis (22) |  |
| Mottled Wood-owl | Strix ocellata (9) |  |
| Rufous-legged Owl | Strix rufipes (3) |  |
| Spotted Wood-owl | Strix seloputo (21) |  |
| Ural Owl | Strix uralensis (36) |  |
| Barred Owl | Strix varia (241) |  |
| African Wood-owl | Strix woodfordii (23) |  |
| Northern Hawk Owl | Surnia ulula (124) |  |
| Papuan Owl | Uroglaux dimorpha (1) |  |
| Long-whiskered Owlet | Xenoglaux loweryi (3) |  |