List of invasive species in Japan

Invasive species include those introduced from overseas, such as the red-eared slider, as well as plants or animals introduced outside their native range within Japan (Siberian chipmunk, etc.). This is a non-exhaustive list, largely based on data from the National Institute of Environmental Studies.

Mammals

 * Bos taurus (cattle) - Problematic in Tokara Islands
 * Callosciurus erythraeus (Pallas's squirrel) - Invasive in various areas in Japan.
 * Callosciurus finlaysonii (Finlayson's squirrel) - Invasive in Shizuoka prefecture.
 * Canis familiaris (dog)
 * Capra aegagrus (feral goat)
 * Erinaceus amurensis (Amur hedgehog)
 * Eutamias sibiricus (Siberian chipmunk) - Native to Hokkaido, invasive in Honshu.
 * Felis catus (feral cat)
 * Macaca cyclopis (Formosan rock macaque)
 * Macaca mulatta (rhesus macaque)
 * Martes melampus (Japanese marten) Honshu native, invasive in Hokkaido and Sado Island
 * Muntiacus reevesi (Reeves's muntjac)
 * Mus musculus (house mouse) - Nationwide.
 * Mustela itatsi (Japanese weasel) Honshu native, invasive in Hokkaido
 * Mustela sibirica (Siberian weasel)
 * Myocastor coypus (coypu, nutria) - Western Japan.
 * Neogale vison (American mink)
 * Nyctereutes procyonoides (raccoon dog)
 * Ondatra zibethicus (muskrat) - Tokyo, Chiba and Saitama.
 * Oryctolagus cuniculus (European rabbit)
 * Paguma larvata (masked palm civet)
 * Procyon lotor (raccoon)
 * Rattus norvegicus (brown rat) - Invasive on outlying islands.
 * Rattus rattus (black rat) - Invasive in almost all of Japan.
 * Sus scrofa (wild boar) on Ototojima and Okinoerabu islands
 * Urva auropunctata (small Indian mongoose) - Okinawa and Kagoshima.

Reptiles

 * Anolis carolinensis (Carolina anole)
 * Chelydra serpentina (common snapping turtle)
 * Cuora flavomarginata (Chinese box turtle)
 * Gekko hokouensis (Hokou gecko) native to outlying islands, invasive on mainland
 * Hemidactylus frenatus (common house gecko)
 * Lepidodactylus lugubris (mourning gecko)
 * Orthriophis taeniurus (beauty rat snake)
 * Pelodiscus sinensis (Chinese softshell turtle)
 * Trachemys scripta elegans (red-eared slider)
 * Protobothrops elegans (elegant pitviper)
 * Protobothrops mucrosquamatus (brown spotted pit viper)
 * Diploderma swinhonis (tree lizard)

Birds

 * Columba livia (feral pigeon)
 * Leiothrix lutea (red-billed leiothrix)
 * Pavo cristatus (Indian peafowl)
 * Phasianus colchicus (common pheasant)
 * Pycnonotus sinensis (light-vented bulbul)

Fish

 * Acheilognathus cyanostigma (striped bitterling)
 * Acheilognathus macropterus
 * Acheilognathus rhombeus (kanehira)
 * Acheilognathus typus (zenitanago)
 * Channa argus (northern snakehead)
 * Clarias batrachus (walking catfish)
 * Ctenopharyngodon idella (grass carp)
 * Cyprinus carpio (common carp)
 * Gambusia affinis (mosquitofish)
 * Gambusia holbrooki (eastern mosquitofish)
 * Ictalurus punctatus (channel catfish)
 * Lepomis macrochirus (bluegill)
 * Micropterus dolomieu (smallmouth bass)
 * Micropterus salmoides (largemouth bass)
 * Monopterus albus (Asian swamp eel)
 * Oncorhynchus mykiss (rainbow trout)
 * Rhodeus ocellatus (rosy bitterling)
 * Salmo trutta (brown trout)
 * Silurus asotus (Amur catfish)
 * Tridentiger brevispinis (numachichibu)

Invertebrates

 * Aculops lycopersici (tomato russet mite)
 * Agriosphodrus dohrni
 * Ambigolimax valentianus (threeband gardenslug)
 * Amphibalanus amphitrite (striped barnacle)
 * Amphibalanus improvisus (bay barnacle)
 * Anoplolepis gracilipes (yellow crazy ant)
 * Aromia bungii (red-necked longhorn)
 * Bemisia tabaci (silverleaf whitefly)
 * Blattella germanica (German cockroach)
 * Bombus terrestris (buff-tailed bumblebee)
 * Bugula neritina (brown bryozoan)
 * Bursaphelenchus xylophilus (pine wood nematode)
 * Cavelerius saccharivorus (oriental chinch bug)
 * Chamberlinius hualinensis
 * Coptotermes formosanus (Formosan subterranean termite)
 * Corbicula fluminea (Asian clam)
 * Corythucha ciliata (sycamore lace bug)
 * Crangonyx floridanus (Florida crangonyctid)
 * Crepidula fornicata (common slipper shell)
 * Crepidula onyx (onyx slippersnail)
 * Cylas formicarius (sweet potato weevil)
 * Delta pyriforme
 * Drosophila suzukii (spotted wing drosophila)
 * Dryocosmus kuriphilus (chestnut gall wasp)
 * Epilachna varivestis (Mexican bean beetle)
 * Euglandina rosea (rosy wolfsnail)
 * Euscepes postfasciatus (West Indian sweetpotato weevil)
 * Frankliniella occidentalis (western flower thrips)
 * Globodera rostochiensis (golden nematode)
 * Hydroides elegans
 * Hylurgus ligniperda (red-haired pine bark beetle)
 * Hypera postica (alfalfa weevil)
 * Hyphantria cunea (fall webworm)
 * Icerya purchasi (cottony cushion scale)
 * Latrodectus geometricus (brown widow)
 * Latrodectus hasseltii (redback spider)
 * Limnoperna fortunei (golden mussel)
 * Linepithema humile (Argentine ant)
 * Liriomyza sativae (vegetable leaf miner)
 * Liriomyza trifolii (serpentine leafminer)
 * Lissachatina fulica (giant African snail)
 * Lissorhoptrus oryzophilus (rice water weevil)
 * Monomorium pharaonis (pharaoh ant)
 * Mytilus galloprovincialis (Mediterranean mussel)
 * Nassarius sinarus (Nassarius snail)
 * Nealsomyia rufella
 * Opisthoplatia orientalis
 * Pacifastacus leniusculus (signal crayfish)
 * Paraglenea fortunei
 * Parasa lepida (nettle caterpillar)
 * Perna viridis (Asian green mussel)
 * Pheidole megacephala (big-headed ant)
 * Platydemus manokwari (New Guinea flatworm)
 * Polyandrocarpa zorritensis
 * Pomacea canaliculata (apple snail)
 * Potamopyrgus antipodarum (New Zealand mud snail)
 * Procambarus clarkii (red swamp crawfish)
 * Pyromaia tuberculata (tuberculate pear crab)
 * Quadrastichus erythrinae (Erythrina gall wasp)
 * Rhabdoscelus obscurus (sugarcane weevil borer)
 * Rhynchophorus ferrugineus (red palm weevil)
 * Solenopsis geminata (fire ant)
 * Thrips palmi (melon thrips)
 * Trialeurodes vaporariorum (glasshouse whitefly)
 * Unaspis yanonensis (arrowhead snow scale)
 * Vespa velutina (Asian predatory wasp)
 * Xyleborus volvulus
 * Xenostrobus securis (small brown mussel)

Plant species

 * Desmodium paniculatum