This is a list of butterfly species and subspecies found in West Bengal, India.
Family: Papilionidae
Subfamily: Papilioninae
Tribe: Leptocircini
Genus: Graphium (swordtails, bluebottles and jays)
Species: Graphium agamemnon (tailed jay) Subspecies: Graphium agamemnon agamemnon (Oriental tailed jay)
Species: Graphium agetes (four-bar swordtail) Subspecies: Graphium agetes agetes (Assam four-bar swordtail)
Species: Graphium antiphates (five-bar swordtail) Subspecies: Graphium antiphates pompilius (Indo-Chinese five-bar swordtail)
Species: Graphium aristeus (chain swordtail) Subspecies: Graphium aristeus anticrates (Assam chain swordtail)
Species: Graphium cloanthus (glassy bluebottle) Subspecies: Graphium cloanthus cloanthus (Himalayan glassy bluebottle)
Species: Graphium doson (common jay) Subspecies: Graphium doson axionides (Himalayan common jay)
Species: Graphium macareus (lesser zebra) Subspecies: Graphium macareus indicus (east Himalayan lesser zebra)
Species: Graphium nomius (spot swordtail) Subspecies: Graphium nomius nomius (Indian spot swordtail)
Species: Graphium sarpedon (common bluebottle) Subspecies: Graphium sarpedon sarpedon (Oriental common bluebottle)
Tribe: Papilionini
Genus: Papilio (swallowtails, mimes)
Species: Papilio alcmenor (redbreast) Subspecies: Papilio alcmenor alcmenor (Khasi redbreast)
Species: Papilio bianor (common peacock) Subspecies: Papilio bianor ganesa (east Himalayan common peacock)
Species: Papilio castor (common raven) Subspecies: Papilio castor polias (Himalayan common raven)
Species: Papilio clytia (common mime) Subspecies: Papilio clytia clytia (Oriental common mime)
Species: Papilio crino (common banded peacock)
Species: Papilio demoleus (lime swallowtail) Subspecies: Papilio demoleus demoleus (northern lime swallowtail or lime butterfly)
Species: Papilio epycides (lesser mime) Subspecies: Papilio epycides epycides (Himalayan lesser mime)
Species: Papilio memnon (great Mormon) Subspecies: Papilio memnon agenor (continental great Mormon)
Species: Papilio nephelus (yellow Helen) Subspecies: Papilio nephelus chaon (Khasi yellow Helen)
Species: Papilio paris (Paris peacock) Subspecies: Papilio paris paris (Chinese Paris peacock)
Species: Papilio polymnestor (blue Mormon) Subspecies: Papilio polymnestor polymnestor (Indian blue Mormon)
Species: Papilio polytes (common Mormon) Subspecies: Papilio polytes romulus (Indian common Mormon)
Species: Papilio protenor (spangle) Subspecies: Papilio protenor euprotenor (Himalayan spangle)
Tribe: Teinopalpini
Genus: Meandrusa
Species: Meandrusa payeni (yellow gorgon) Subspecies: Meandrusa payeni evan (Sikkim yellow gorgon)
Tribe: Troidini
Genus: Atrophaneura
Species: Atrophaneura polyeuctes (common windmill) Subspecies: Atrophaneura polyeuctes polyeuctes (Sylhet common windmill)
Genus: Pachliopta
Species: Pachliopta aristolochiae (common rose) Subspecies: Pachliopta aristolochiae aristolochiae (Indian common rose)
Genus: Troides
Species: Troides helena (common birdwing) Subspecies: Troides helena cerberus (Khasi common birdwing)
Family: Pieridae
Subfamily: Coliadinae
Genus: Catopsilia (emigrants)
Species: Catopsilia pomona (lemon emigrant or common emigrant) Subspecies: Catopsilia pomona pomona (Oriental lemon emigrant)
Species: Catopsilia pyranthe (mottled emigrant) Subspecies: Catopsilia pyranthe pyranthe (Oriental mottled emigrant)
Genus: Eurema (grass yellows)
Species: Eurema andersonii (one-spot grass yellow) Subspecies: Eurema andersonii jordani (Sikkim one-spot grass yellow or Jordan's grass yellow)
Species: Eurema hecabe (common grass yellow) Subspecies: Eurema hecabe hecabe (Oriental common grass yellow)
Genus: Gandaca
Species: Gandaca harina (tree yellow) Subspecies: Gandaca harina assamica (Assam tree yellow)
Subfamily: Pierinae
Tribe: Anthocharidini
Genus: Hebomoia
Species: Hebomoia glaucippe (great orange-tip) Subspecies: Hebomoia glaucippe glaucippe (Oriental great orange-tip)
Tribe: Leptosiaini
Genus: Leptosia
Species: Leptosia nina (psyche) Subspecies: Leptosia nina nina (Oriental psyche)
Tribe: Pierini
Genus: Appias
Species: Appias albina (common albatross) Subspecies: Appias albina darada (Sylhet common albatross)
Species: Appias lalage (spot puffin) Subspecies: Appias lalage lalage (Himalayan spot puffin)
Species: Appias libythea (western striped albatross)