This is a list of butterfly species and subspecies found in West Bengal, India.
Tribe: Leptocircini
Subspecies: Graphium agamemnon agamemnon (Oriental tailed jay)
Subspecies: Graphium agetes agetes (Assam four-bar swordtail)
Subspecies: Graphium antiphates pompilius (Indo-Chinese five-bar swordtail)
Subspecies: Graphium aristeus anticrates (Assam chain swordtail)
Subspecies: Graphium cloanthus cloanthus (Himalayan glassy bluebottle)
Subspecies: Graphium doson axionides (Himalayan common jay)
Subspecies: Graphium macareus indicus (east Himalayan lesser zebra)
Subspecies: Graphium nomius nomius (Indian spot swordtail)
Subspecies: Graphium sarpedon sarpedon (Oriental common bluebottle)
Tribe: Papilionini
Subspecies: Papilio alcmenor alcmenor (Khasi redbreast)
Subspecies: Papilio bianor ganesa (east Himalayan common peacock)
Subspecies: Papilio castor polias (Himalayan common raven)
Subspecies: Papilio clytia clytia (Oriental common mime)
Subspecies: Papilio demoleus demoleus (northern lime swallowtail or lime butterfly)
Subspecies: Papilio epycides epycides (Himalayan lesser mime)
Subspecies: Papilio memnon agenor (continental great Mormon)
Subspecies: Papilio nephelus chaon (Khasi yellow Helen)
Subspecies: Papilio paris paris (Chinese Paris peacock)
Subspecies: Papilio polymnestor polymnestor (Indian blue Mormon)
Subspecies: Papilio polytes romulus (Indian common Mormon)
Subspecies: Papilio protenor euprotenor (Himalayan spangle)
Tribe: Teinopalpini
Subspecies: Meandrusa payeni evan (Sikkim yellow gorgon)
Tribe: Troidini
Subspecies: Atrophaneura polyeuctes polyeuctes (Sylhet common windmill)
Subspecies: Pachliopta aristolochiae aristolochiae (Indian common rose)
Subspecies: Troides helena cerberus (Khasi common birdwing)
Subspecies: Catopsilia pomona pomona (Oriental lemon emigrant)
Subspecies: Catopsilia pyranthe pyranthe (Oriental mottled emigrant)
Subspecies: Eurema andersonii jordani (Sikkim one-spot grass yellow or Jordan's grass yellow)
Subspecies: Eurema hecabe hecabe (Oriental common grass yellow)
Subspecies: Gandaca harina assamica (Assam tree yellow)
Tribe: Anthocharidini
Subspecies: Hebomoia glaucippe glaucippe (Oriental great orange-tip)
Tribe: Leptosiaini
Subspecies: Leptosia nina nina (Oriental psyche)
Tribe: Pierini
Subspecies: Appias albina darada (Sylhet common albatross)
Subspecies: Appias lalage lalage (Himalayan spot puffin)
Subspecies: Appias lyncida eleonora (Indo-Chinese chocolate albatross)
Subspecies: Delias acalis pyramus (Himalayan redbreast Jezebel)
Subspecies: Delias agostina agostina (Sikkim yellow Jezebel)
Subspecies: Delias belladonna ithiela (Sikkim hill Jezebel)
Subspecies: Delias descombesi descombesi (Vietnamese red-spot Jezebel)
Subspecies: Delias hyparete indica (Indian painted Jezebel)
Subspecies: Delias pasithoe pasithoe (Chinese red-base Jezebel)
Subspecies: Prioneris philonome clemanthe (Burmese redspot sawtooth)
Subspecies: Prioneris thestylis thestylis (Himalayan spotted sawtooth)
Tribe: Teracolini
Subspecies: Ixias pyrene familiaris (east Himalayan yellow orange-tip)
Tribe: Apaturini
Subspecies: Euripus nyctelius nyctelius (Sylhet Circe)
Subspecies: Hestinalis nama nama (Sylhet courtesan)
Subspecies: Rohana parisatis parisatis (Assam black prince)
Tribe: Danaini
Subspecies: Ariadne ariadne indica (Indian angled castor)
Subspecies: Ariadne merione tapestrina (intricate common castor)
Subspecies: Charaxes arja arja (Bengal pallid nawab)
Subspecies: Charaxes bernardus hierax (variable tawny rajah)
Subspecies: Charaxes eudamippus eudamippus (Himalayan great nawab)
Subspecies: Charaxes marmax marmax (Sylhet yellow rajah)
Subspecies: Charaxes solon solon (pale black rajah)
Subspecies: Cyrestis thyodamas thyodamas (Oriental map butterfly)
Tribe: Danaini
Subspecies: Danaus chrysippus chrysippus (Oriental plain tiger)
Subspecies: Danaus genutia genutia (Oriental striped tiger)
Subspecies: Euploea klugii kollari (brown king crow)
Subspecies: Euploea radamanthus radamanthus (Oriental magpie crow)
Subspecies: Euploea sylvester hopei (Cachar double-branded blue crow)
Subspecies: Euploea mulciber mulciber (Bengal striped blue crow)
Subspecies: Parantica aglea melanoides (Himalayan glassy tiger)
Subspecies: Parantica melaneus plataniston (Himalayan chocolate tiger)
Subspecies: Tirumala limniace exoticus (Oriental blue tiger)
Subspecies: Tirumala septentrionis septentrionis (Oriental dark blue tiger)
Tribe: Acraeini
Subspecies: Cethosia biblis tisamena (Himalayan red lacewing)
Subspecies: Cethosia cyane cyane (Bengal leopard lacewing)
Tribe: Argynnini
Subspecies: Argynnis hyperbius hyperbius (Chinese tropical fritillary)
Tribe: Vagrantini
Subspecies: Cirrochroa aoris aoris (Himalayan large yeoman)
Subspecies: Cirrochroa tyche mithila (Bengal common yeoman)
Subspecies: Phalanta phalantha phalantha (Oriental common leopard)
Subspecies: Vagrans egista sinha (Himalayan vagrant)
Subspecies: Vindula erota erota (Thai cruiser)
Tribe: Adoliadini
Subspecies: Euthalia lubentina lubentina (Chinese gaudy baron)
Subspecies: Euthalia monina kesava (Assam powdered baron)
Subspecies: Euthalia phemius phemius (Sylhet white-edged blue baron)
Subspecies: Tanaecia jahnu jahnu (Darjeeling plain earl)
Subspecies: Tanaecia julii appiades (changeable common earl)
Subspecies: Tanaecia lepidea lepidea (Himalayan grey count)
Tribe: Limenitidini
Subspecies: Athyma cama cama (Himalayan orange staff sergeant)
Subspecies: Athyma inara inara (Himalayan colour sergeant)
Subspecies: Auzakia danava danava (Indian commodore)
Subspecies: Lebadea martha martha (Thai knight)
Subspecies: Moduza procris procris (Oriental commander)
Subspecies: Parasarpa dudu dudu (Sylhet white commodore)Tribe: Neptini
Subspecies: Lasippa viraja viraja (Bengal yellowjack sailer)
Subspecies: Neptis hylas varmona (Indian common sailer)
Subspecies: Neptis zaida bhutanica (east Himalayan pale green sailer)
Subspecies: Pantoporia hordonia hordonia (Oriental common lascar)
Tribe: Junoniini
Subspecies: Hypolimnas bolina jacintha (Oriental great eggfly)
Subspecies: Junonia almana almana (Oriental peacock pansy)
Subspecies: Junonia atlites atlites (Oriental grey pansy)
Subspecies: Junonia hierta hierta (Oriental yellow pansy)
Subspecies: Junonia iphita iphita (Oriental chocolate pansy)
Subspecies: Junonia lemonias lemonias (Chinese lemon pansy)
Subspecies: Junonia orithya ocyale (dark blue pansy)
Tribe: Kallimini
Subspecies: Doleschallia bisaltide indica (Himalayan autumn leaf)
Subspecies: Kallima inachus inachus (Himalayan orange oakleaf)
Tribe: Nymphalini
Subspecies: Aglais caschmirensis aesis (Himalayan tortoiseshell)
Subspecies: Symbrenthia lilaea khasiana (Khasi common mester)
Subspecies: Vanessa indica indica (Himalayan red admiral)
Tribe: Pseudergolini
Subspecies: Pseudergolis wedah wedah (Himalayan tabby)
Subspecies: Stibochiona nicea nicea (Himalayan popinjay)
Tribe: Elymniini
Subspecies: Elymnias hypermnestra undularis (wavy common palmfly)
Subspecies: Elymnias malelas malelas (Bengal spotted palmfly)
Tribe: Melanitini
Subspecies: Melanitis leda leda (Oriental common evening brown)
Tribe: Satyrini
Subspecies: Lethe chandica chandica (Darjeeling angled red forester)
Subspecies: Lethe confusa confusa (Himalayan banded treebrown)
Subspecies: Mycalesis anaxias aemate (Indo-Chinese white-bar bushbrown)
Subspecies: Ypthima baldus baldus (Himalayan common five-ring)
Subspecies: Curetis acuta dentata (Indian acute sunbeam)
Subspecies: Curetis bulis bulis (Himalayan bright sunbeam)
Subspecies: Heliophorus brahma brahma (Himalayan golden sapphire)
Tribe: Lycaenesthini
Subspecies: Anthene emolus emolus (Bengal common ciliate blue)Tribe: Polyommatini
Subspecies: Acytolepis puspa gisca (Himalayan common hedge blue)
Subspecies: Caleta elna noliteia (Indo-Chinese elbowed Pierrot)
Subspecies: Castalius rosimon rosimon (Continental common Pierrot)
Subspecies: Catochrysops panormus exiguus (Malay silver forget-me-not)
Subspecies: Catochrysops strabo strabo (Oriental forget-me-not)
Subspecies: Luthrodes pandava pandava (Oriental plains Cupid)
Subspecies: Everes lacturnus syntala (Dakhan Cupid)
Subspecies: Jamides bochus bochus (Indian dark cerulean)
Subspecies: Jamides celeno celeno (Oriental common cerulean)
Subspecies: Leptotes plinius plinius (Asian zebra blue)
Subspecies: Neopithecops zalmora zalmora (Myanmar common Quaker)
Subspecies: Prosotas dubiosa indica (Indian tailless lineblue)
Subspecies: Prosotas nora ardates (Indian common lineblue)
Subspecies: Pseudozizeeria maha maha (Himalayan pale grass blue)
Subspecies: Zizina otis otis (Oriental lesser grass blue)
Tribe: Poritiini
Subspecies: Poritia hewitsoni hewitsoni (Himalayan common gem)
Tribe: Amblypodiini
Subspecies: Amblypodia anita dina (Indian purple leaf blue)
Subspecies: Iraota rochana boswelliana (Malayan scarce silverstreak blue)
Tribe: Arhopalini
Subspecies: Arhopala abseus indicus (Indian aberrant oakblue)
Subspecies: Arhopala bazalus teesta (Teesta powdered oakblue)
Subspecies: Arhopala centaurus pirithous (Bengal centaur oakblue)
Subspecies: Surendra quercetorum quercetorum (Himalayan common acacia blue)
Tribe: Catapaecilmini
Subspecies: Catapaecilma major major (Himalayan common tinsel)
Tribe: Cheritrini
Subspecies: Cheritra freja evansi (Khasi common imperial)
Subspecies: Ticherra acte acte (Himalayan blue imperial)
Tribe: Deudorigini
Subspecies: Rapala iarbus iarbus (Oriental red flash)
Subspecies: Rapala pheretima petosiris (Indian copper flash)
Subspecies: Virachola perse perse (Himalayan large guava blue)
Tribe: Iolaini
Subspecies: Creon cleobis cleobis (Bengal broad-tail royal)
Tribe: Horagini
Subspecies: Horaga onyx onyx (variable common onyx)
Tribe: Hypolycaenini
Subspecies: Hypolycaena erylus himavantus (Sikkim common tit)
Subspecies: Hypolycaena othona othona (Oriental orchid tit)
Subspecies: Zeltus amasa amasa (Indian fluffy tit)
Tribe: Remelanini
Subspecies: Ancema blanka minturna (blue-streaked silver royal)
Subspecies: Remelana jangala ravata (northern chocolate royal)
Tribe: Abisarini
Subspecies: Abisara bifasciata angulata (angled double-banded Judy)
Tribe: Nemeobiini
Subspecies: Dodona dipoea dipoea (Himalayan lesser Punch)
Subspecies: Dodona egeon egeon (Himalayan orange Punch)
Subspecies: Zemeros flegyas flegyas (Himalayan Punchinello)
Subspecies: Bibasis sena sena (Indian orangetail awl)
Subspecies: Choaspes benjaminii japonica (Oriental common awlking)
Subspecies: Hasora badra badra (Oriental common awl)
Tribe: Aeromachini
Subspecies: Ochus subvittatus subradiatus (Khasi tiger hopper)
Subspecies: Suastus gremius gremius (Indian palm bob)
Subspecies: Zographetus ogygia ogygia (continental purple-spotted flitter)
Tribe: Erionotini
Subspecies: Ancistroides nigrita diocles (Bengal chocolate demon)
Subspecies: Iambrix salsala salsala (eastern chestnut bob)
Tribe: Baorini
Tribe: Carcharodini
Tribe: Celaenorrhinini
Subspecies: Celaenorrhinus putra putra (Bengal restricted spotted flat)
Subspecies: Pseudocoladenia dan fabia (Himalayan fulvous pied flat)
Subspecies: Sarangesa dasahara dasahara (Indian common small flat)
Tribe: Tagiadini
Subspecies: Caprona ransonnetii potiphera (Dakhan golden angle)
Subspecies: Coladenia agni agni (Himalayan brown pied flat)
Subspecies: Ctenoptilum vasava vasava (Himalayan tawny angle)
Subspecies: Gerosis phisara phisara (Khasi dusky yellow-breast flat)
Subspecies: Mooreana trichoneura pralaya (yellow-veined flat)
Subspecies: Odontoptilum angulata angulata (Oriental chestnut angle)
Subspecies: Seseria dohertyi dohertyi (Himalayan contiguous seseria or Himalayan white flat)
Subspecies: Seseria sambara sambara (Himalayan notched seseria or Sikkim white flat)
Subspecies: Tagiades japetus ravi (Himalayan common snow flat)