There are 88 officially recognized constellations by the International Astronomical Union (IAU). Here's a list of them, grouped by their hemisphere:

Northern Hemisphere Constellations:

* Andromeda

* Aquarius

* Aquila

* Aries

* Auriga

* Boötes

* Camelopardalis

* Cancer

* Canes Venatici

* Capricornus

* Cassiopeia

* Cepheus

* Cetus

* Coma Berenices

* Corona Borealis

* Crater

* Cygnus

* Delphinus

* Draco

* Equuleus

* Gemini

* Hercules

* Hydra

* Lacerta

* Leo

* Leo Minor

* Libra

* Lynx

* Lyra

* Monoceros

* Ophiuchus

* Pegasus

* Perseus

* Pisces

* Pisces Austrinus

* Sagitta

* Sagittarius

* Scorpius

* Serpens

* Sextans

* Taurus

* Triangulum

* Ursa Major

* Ursa Minor

* Virgo

Southern Hemisphere Constellations:

* Apus

* Ara

* Caelum

* Carina

* Centaurus

* Chamaeleon

* Circinus

* Columba

* Corvus

* Crux

* Dorado

* Eridanus

* Fornax

* Grus

* Horologium

* Hydrus

* Indus

* Lepus

* Lupus

* Mensa

* Microscopium

* Musca

* Norma

* Octans

* Orion

* Pavo

* Phoenix

* Pictor

* Piscis Austrinus

* Puppis

* Pyxis

* Reticulum

* Sculptor

* Scutum

* Telescopium

* Tucana

* Vela

* Volans

Zodiac Constellations:

* Aries

* Taurus

* Gemini

* Cancer

* Leo

* Virgo

* Libra

* Scorpio

* Sagittarius

* Capricornus

* Aquarius

* Pisces

Please note that some constellations are visible from both hemispheres, but their visibility depends on the time of year and location.