This is a list of bat species by global population. While numbers are estimates, they have been made by the experts in their fields. For more information on how these estimates were ascertained, see Wikipedia's articles on population biology and population ecology.
This list is not comprehensive, as not all bats have had their numbers quantified.
Common nameBinomial namePopulation StatusTrendNotesImage Christmas Island pipistrelle Pipistrellus murrayi 0 Believed to be extinct after 2009, when the last call of a bat was recorded. Jamaican greater funnel-eared bat Natalus jamaicensis 50 Only found in the St. Clair Cave in Jamaica. Population estimate was done in 1970. Seychelles sheath-tailed bat Coleura seychellensis 50-100 Maximum estimate for mature individuals. Cuban greater funnel-eared bat Natalus primus 100 Maximum estimate. Only found in a single cave. Bulmer's fruit bat Aproteles bulmerae 137-160 Only one colony is known to exist. Flat-headed myotis Myotis planiceps 240 Maximum estimate for mature individuals. Jamaican flower bat Phyllonycteris aphylla 250 Colonies only at Marta Tick Cave and Stony Hill Cave. Bonin flying fox Pteropus pselaphon 200-250 Maximum estimate. Arnhem leaf-nosed bat Hipposideros inornatus 300 No robust estimates of population size. New Georgian monkey-faced bat Pteralopex taki 100-3,000 (best estimate: 400) Estimate is for mature individuals. Canary long-eared bat Plecotus teneriffae 500 – 2,000 Livingstone's fruit bat Pteropus livingstonii 1,200-1,500 Coastal sheath-tailed bat Taphozous australis 9,000-10,000 New Caledonia wattled bat Chalinolobus neocaledonicus 1,500-2,000 Maximum estimate from known colonies. Azores noctule Nyctalus azoreum 2,000 – 5,000 Thailand roundleaf bat Hipposideros halophyllus 2,500 – 10,000 Rodrigues flying fox Pteropus rodricensis 20,000 Kitti's hog-nosed bat Craseonycteris thonglongyai 6,600 In Thailand, it is found in 44 caves with estimated population size of 6,487 individuals. In Myanmar, it is found in 8 caves with estimated population size of 3,770 individuals. Ghost bat Macroderma gigas 4,000-6,000 Totals differ between authors, with some suggesting somewhere between 4,000 - 6,000, and the previous IUCN Red List account containing an estimate of 7,000-9,000 - but all agree that there are less than 10,000 individuals in existence. Comoro rousette Rousettus obliviosus 10,000-20,000? Giant golden-crowned flying fox Acerodon jubatus 10,000 Rough estimate; probably no more than 20,000. Banana bat Musonycteris harrisoni 10,000 Pemba flying fox Pteropus voeltzkowi 19,000 Increase from a few hundred in the early 1990s. Mauritian flying fox Pteropus niger 37,700 Minimum estimate. New Zealand lesser short-tailed bat Mystacina tuberculata 30,000 Minimum estimate. Madagascan flying fox Pteropus rufus 300,000 Grey-headed flying fox Pteropus poliocephalus 320,000 - 674,000or467,000 Estimates are based on incomplete knowledge of camp location and use. Indiana bat Myotis sodalis 387,300 Though numbers are large compared to other bats classified as endangered, this species is listed as such due to a >50% decline over the past decade. Straw-coloured fruit bat Eidolon helvum 1,100,000,000 The most heavily harvested bat for bushmeat in West and Central Africa. Pallas's long-tongued bat Glossophaga soricina 1,030,000,000 Angolan rousette Myonycteris angolensis 823,000,000 Heller's broad-nosed bat Platyrrhinus helleri 733,000,000 Trident bat Asellia tridens 740,000,000 Great stripe-faced bat Vampyrodes caraccioli 664,000,000 ? Franquet's epauletted fruit bat Epomops franqueti 609,000,000 Wahlberg's epauletted fruit bat Epomophorus wahlbergi || 597,000,000 || |align="center"|
| Lesser mouse-tailed bat ||Rhinopoma hardwickii || 600,000,000 || |align="center"|
| Hairy big-eyed bat ||Chiroderma villosum || 536,000,000 || |align="center"|
| Tilda's yellow-shouldered bat ||Sturnira tildae || 51,000,000 || | align=center|
| Southern red bat ||Lasiurus blossevillii || 526,000,000 || |align="center"|?
| Brown fruit-eating bat ||Artibeus concolor || 488,000,000 || | align=center|
| Greater bulldog bat ||Noctilio leporinus || 511,000,000 || |- | Egyptian slit-faced bat ||Nycteris thebaica || 503,000,000 || |- | MacConnell's bat ||Mesophylla macconnelli || 473,000,000 || |- | Egyptian fruit bat ||Rousettus aegyptiacus || 489,000,000 || |- | Little big-eyed bat ||Chiroderma trinitatum || 459,000,000 || |- | Gambian epauletted fruit bat ||Epomophorus gambianus || 466,000,000 || |- | Leschenault's rousette ||Rousettus leschenaultii || 446,000,000 |||| align=center|||Data from across the species range suggests an overall decline of ca 25% over the last 15 years. |- | Serotine ||Eptesicus serotinus || 438,000,000 || |- | Geoffroy's rousette ||Rousettus amplexicaudatus || 431,000,000 || |- | Short-headed broad-nosed bat ||Platyrrhinus brachycephalus || 406,000,000 || |- | Large-eared slit-faced bat ||Nycteris macrotis || 421,000,000 || |- | Hairy slit-faced bat ||Nycteris hispida || 401,000,000 || || align=center| |- | Greater spear-nosed bat ||Phyllostomus hastatus || 402,000,000 || |- | Black myotis ||Myotis nigricans || 376,000,000 || |- | Dawn bat ||Eonycteris spelaea || 357,000,000 || || |- | Black bonneted bat ||Eumops auripendulus || 351,000,000 || |- | Lander's horseshoe bat ||Rhinolophus landeri || 346,000,000 || |- | Greater short-nosed fruit bat ||Cynopterus sphinx || 341,000,000 || |- | Black mastiff bat ||Molossus rufus || 345,000,000 || |- | Lesser long-eared bat ||Nyctophilus geoffroyi || 336,000,000 || || |- | Long-tongued nectar bat ||Macroglossus minimus || 318,000,000 || || |- | Fischer's little fruit bat ||Rhinophylla fischerae || 310,000,000 || || align=center| |- | Pale spear-nosed bat ||Phyllostomus discolor || 315,000,000 || || align=center| |- | White-winged vampire bat ||Diaemus youngi || 304,000,000 || || |- | Tomes's sword-nosed bat ||Lonchorhina aurita || 299,000,000 || || |- | Fringe-lipped bat ||Trachops cirrhosus || 293,000,000 || || |- | Broad-eared bat ||Nyctinomops laticaudatus || 289,000,000 || |- | Little white-shouldered bat ||Ametrida centurio || 273,000,000 || |- | Visored bat ||Sphaeronycteris toxophyllum || 265,000,000 || |- | Riparian myotis ||Myotis riparius || 276,000,000 || || align=center| |- | Lesser dog-like bat ||Peropteryx macrotis || 274,000,000 || |- | Southern dog-faced bat ||Cynomops planirostris || 272,000,000 || |- | Southern yellow bat ||Lasiurus ega || 276,000,000 || |- | African yellow bat ||Scotophilus dinganii || 276,000,000 || ||
| Rüppell's horseshoe bat ||Rhinolophus fumigatus || 255,000,000 || || |- | Silver-tipped myotis ||Myotis albescens || 246,000,000 || || align=center| |- | Brazilian brown bat ||Eptesicus brasiliensiss || 249,000,000 || |- | Hammer-headed bat ||Hypsignathus monstrosus || 247,000,000 || |- | Greater Asiatic yellow bat ||Scotophilus heathii || 246,000,000 || |- | Western mastiff bat ||Eumops perotis || 229,000,000 || |- | Lesser Asiatic yellow bat ||Scotophilus kuhlii || 229,000,000 || |- | Lesser dog-faced fruit bat ||Cynopterus brachyotis || 228,000,000 || |- | Lesser woolly bat ||Kerivoula lanosa || 230,000,000 || |- | Wagner's bonneted bat ||Eumops glaucinus || 229,000,000 || |- | Variegated butterfly bat ||Glauconycteris variegata || 229,000,000 || |- | Noack's roundleaf bat ||Hipposideros ruber || 227,000,000 || |- | Velvety free-tailed bat ||Molossus molossus || 226,000,000 || |- | Sanborn's bonneted bat ||Eumops hansae || 219,000,000 || |- | Kuhl's pipistrelle ||Pipistrellus kuhlii || 215,000,000 || |- | Argentine brown bat ||Eptesicus furinalis || 213,000,000 || |- | Lesser bulldog bat ||Noctilio albiventris || 215,000,000 || |- | Great fruit-eating bat ||Artibeus lituratus || 222,000,000 || |- | Yellow-winged bat ||Lavia frons || 213,000,000 || || |- | Lesser sac-winged bat ||Saccopteryx leptura || 208,000,000 || |- | Seba's short-tailed bat ||Carollia perspicillata || 219,000,000 || |- | Northern little yellow-eared bat ||Vampyressa thyone || 199,000,000 || |- | Proboscis bat ||Rhynchonycteris naso || 208,000,000 || |- | Pale-faced bat ||Phylloderma stenops || 219,000,000 || |- | Dark fruit-eating bat ||Artibeus obscurus || 217,000,000 || |- | Spix's disk-winged bat ||Thyroptera tricolor || 201,000,000 || |- | Coiban mastiff bat ||Molossus coibensis || 205,000,000 || |- | Long-legged bat ||Macrophyllum macrophyllum || 199,000,000 || |- | Para dog-faced bat ||Cynomops paranus || 202,000,000 || |- | Cinnamon dog-faced bat ||Cynomops abrasus || 201,000,000 || |- | Northern ghost bat ||Diclidurus albus || 195,000,000 || |- | Gould's wattled bat ||Chalinolobus gouldii || 193,000,000 || || |- | Lesser mouse-eared bat ||Myotis blythii || 191,000,000 || || |- |Common pipistrelle ||Pipistrellus pipistrellus || 188,000,000 || || |- |Golden bat ||Mimon bennettii || 187,000,000 || |- |Big brown bat ||Eptesicus fuscus || 186,000,000 || || |- |Large-eared free-tailed bat ||Otomops martiensseni || 186,000,000 |||| align=center| |- |Thumbless bat ||Furipterus horrens || 185,000,000 || |- |Chestnut sac-winged bat ||Cormura brevirostris || 182,000,000 || |- |Greater dog-like bat ||Peropteryx kappleri || 182,000,000 || |- |Horsfield's fruit bat ||Cynopterus horsfieldii || 180,000,000 || |- |Rufous dog-faced bat ||Molossops neglectus || 179,000,000 || |- |Little broad-nosed bat ||Scotorepens greyii || 177,000,000 || |- |Lesser spear-nosed bat ||Phyllostomus elongatus || 176,000,000 || |- |Ethiopian epauletted fruit bat ||Epomophorus labiatus || 173,000,000 || |- |Natterer's bat ||Myotis nattereri || 172,000,000 || || align=center| |- |Geoffroy's tailless bat ||Anoura geoffroyi || 171,000,000 || |- |Tricolored big-eared bat ||Glyphonycteris sylvestris || 171,000,000 || |- |Mexican free-tailed bat ||Tadarida brasiliensis || 168,000,000 || |- |Frosted sac-winged bat ||Saccopteryx canescens || 167,000,000 || |- |Silver-haired bat ||Lasionycteris noctivagans || 165,000,000 || |- |Greater mouse-tailed bat ||Rhinopoma microphyllum || 164,000,000 || || align=center| |- |Brown tent-making bat ||Uroderma magnirostrum || 164,000,000 || |- |White-bellied big-eared bat ||Micronycteris minuta || 162,000,000 || |- |Hoary bat ||Lasiurus cinereus || 161,000,000 || |- |Tent-making bat ||Uroderma bilobatum || 160,000,000 || |- |Long-tongued fruit bat ||Macroglossus sobrinus || 159,000,000 || |- |Nepal myotis ||Myotis nipalensis || 159,000,000 || |- |Schmidts's big-eared bat ||Micronycteris schmidtorum || 158,000,000 || || align=center| |- |Colombian bonneted bat ||Eumops trumbulli || 157,000,000 || |- |Mato Grosso dog-faced bat ||Neoplatymops mattogrossensis || 157,000,000 || |- |Dwarf dog-faced bat ||Molossops temminckii || 157,000,000 || |- |Velvety fruit-eating bat ||Enchisthenes hartii || 155,000,000 || |- |White-winged dog-like bat ||Peropteryx leucoptera || 154,000,000 || |- |Yellow-bellied sheath-tailed bat ||Saccolaimus flaviventris || 154,000,000 || || |- |Little brown bat ||Myotis lucifugus || 151,000,000 |||| align=center|||The best available evidence as of 2021 conservatively predicts a 99% chance of Little Brown Bat extinction in the northeastern U.S. by at least 2026 due to white-nose syndrome. |- |Finlayson's cave bat ||Vespadelus finlaysoni || 151,000,000 || |- |Pygmy round-eared bat ||Lophostoma brasiliense || 149,000,000 || || align=center| |- |Pygmy round-eared bat ||Scotoecus hirundo || 149,000,000 || |- |Big-eared woolly bat ||Chrotopterus auritus || 148,000,000 || || align=center| |- |Schlieffen's bat ||Nycticeinops schlieffeni || 148,000,000 || |- |Salvin's big-eyed bat ||Chiroderma salvini || 145,000,000 || |- |Little collared fruit bat ||Myonycteris torquata || 147,000,000 || |- |Little big-eared bat ||Micronycteris megalotis || 144,000,000 || |- |Welwitsch's bat ||Myotis welwitschii || 144,000,000 || |-