Celestial Cat Names: 70+ Cosmic, Starry & Astrological Ideas

Celestial cat names come from the night sky — the Moon, the stars and constellations, the planets, and the mythology humans have hung on all of them. No animal wears these names better: cats are crepuscular, wired for twilight, with eyes built for moonlight, and their association with the Moon runs back to ancient Egypt. Below are 70+ ideas organized by cosmic theme, from Luna — the most popular female cat name in America — to Cassiopeia, Nyx, and Nebula.

There's a reason the most popular female cat name in the country is Latin for Moon. Dogs got the Sun-adjacent names — loyal, golden, daytime animals. Cats claimed the night shift millennia ago and never gave it back. The Egyptians linked the cat goddess Bastet to lunar and protective symbolism; the Norse gave the goddess Freyja a chariot drawn by two cats; and every cat since has confirmed the casting at 3am.

So the sky is not just a theme for cat names. It's the correct one. This guide organizes it into four registers — Moon names, star names, planet-and-phenomena names, and mythological ones — plus an astrological section that matches the name to your cat's zodiac element. If you don't know your cat's sign yet, the free Pet Zodiac Calculator finds it in seconds.

Moon Names for Cats — The Classics

The lunar register is the deepest one, and not only because of Luna. Several of these are real moons — Callisto, Europa, Phoebe, Rhea, Miranda, and Io orbit Jupiter, Saturn, and Uranus right now. Others are Moon goddesses from three different mythologies. A cat's emotional life is famously ruled by the Moon in astrology — the cat Moon sign guide argues it matters more for cats than for any other animal — so a Moon name is the closest thing to naming the cat after its own inner weather.

• Luna — Latin for Moon; the reigning queen of cat names
• Selene — the Greek Moon goddess who drives the night sky
• Crescent — the Moon's most elegant phase
• Artemis — Moon goddess, huntress; extremely cat
• Chandra — the Moon in Sanskrit
• Mahina — the Moon in Hawaiian
• Aylin — Turkish, "halo of the Moon"
• Callisto — one of Jupiter's four great moons
• Europa — Jupiter's ice-covered moon
• Phoebe — Saturn's backwards-orbiting rebel moon
• Rhea — Saturn's second-largest moon
• Miranda — the strangest moon of Uranus
• Io — two letters, volcanic personality
• Portia — a moon of Uranus named for Shakespeare's sharpest heroine

Star & Constellation Names — For the Dramatic Ones

Real stars, real constellations, zero effort required at the vet's office when someone asks what the name means. Mira, notably, is a real star in the constellation Cetus that brightens and fades on a cycle — the original diva star for the cat whose affection also has phases.

• Vega — one of the brightest stars in the northern sky
• Lyra — the lyre-shaped constellation Vega sits in
• Nova — a star that suddenly flares; you'll see why at 4am
• Stella — Latin for star, soft enough to whisper
• Astra — Greek for star, sharper on the tongue
• Cassiopeia — the throne-seated queen; "Cassie" for weekdays
• Andromeda — a princess and an entire galaxy
• Altair — the eagle star, one of the fastest-spinning known
• Rigel — the blue-white foot of Orion
• Polaris — the North Star; the one that never moves from its spot
• Mira — the pulsing "wonderful star" of Cetus
• Bellatrix — Orion's shoulder; Latin for female warrior
• Carina — the keel of the great southern ship constellation
• Draco — the dragon coiled around the north pole of the sky
• Perseus — the hero constellation with the demon star Algol
• Castor & Pollux — the Gemini twins, made for a bonded pair of cats

Planet & Cosmic Phenomena Names — For the Forces of Nature

Planets, dwarf planets, and the sky's special effects. If your cat's personality is less "gentle moonbeam" and more "astronomical event", this is the register.

• Venus — the brightest planet, the beauty
• Mercury — fast, clever, impossible to catch
• Pluto — small, distant, refuses to accept demotion
• Ceres — the dwarf planet of the harvest goddess
• Eris — the dwarf planet of discord; some cats earn it
• Nebula — a cloud where stars are born
• Aurora — the northern lights, on four paws
• Eclipse — for the black cat that blocks your laptop like the Moon blocks the Sun
• Solstice — the turning point of the year
• Equinox — perfect balance, twice a year, briefly
• Quasar — the loudest object in the universe
• Galaxy — "Gal" for short
• Stardust — what everything, including the cat, is made of
• Zenith — the highest point in the sky, i.e. the top of the fridge

Night-Sky Mythology & Star Words From Around the World

Gods of the night, and the word "star" in languages that made it beautiful. Freya deserves special mention: in Norse mythology, the goddess Freyja's chariot is drawn by two cats — the oldest job cats ever held in any pantheon.

• Nyx — the Greek primordial goddess of night
• Freya — the Norse goddess whose chariot is pulled by two cats
• Hecate — goddess of the crossroads and the dark of the Moon
• Astraea — the star-maiden who became the constellation Virgo
• Nott — the Norse personification of night itself
• Hoshi — star, in Japanese
• Seren — star, in Welsh
• Citlali — star, in Nahuatl
• Sidra — Arabic, "of the stars"
• Danica — the morning star, in Slavic languages
• Estelle — the French star, wearing pearls
• Celeste — "heavenly", the whole theme in one word
• Astrid — Old Norse, long associated with stars
• Tara — the star goddess of Hindu and Buddhist tradition

Astrological Cat Names — Match the Name to the Sign

Here's where celestial naming stops being aesthetic and starts being astrological. Every zodiac sign belongs to an element — fire, earth, air, or water — and the element is the temperament's texture. A name that carries the right element fits the cat the way the right sign card reads uncannily true. If you know your cat's sign, pick from their element. If you don't, the calculator takes an estimated birthday, and the guide to all 12 cat Sun signs lets you work backwards from behavior.

Fire-sign cats (Aries, Leo, Sagittarius) — the bold ones, the door-darters, the ones that pick fights with dogs three times their size. Give them Sun names: Helios (the Greek Sun god), Sol (the Sun, in Latin), Flare (a solar eruption, domesticated). Nova and Bellatrix from the star list also run hot.

Earth-sign cats (Taurus, Virgo, Capricorn) — the steady ones who run the household through routine. Give them grounded cosmic names: Gaia (the Earth itself, as a goddess), Flora (what grows under the sky), or Ceres from the planet list — the harvest, made celestial.

Air-sign cats (Gemini, Libra, Aquarius) — the talkers, the socialites, the eccentrics on top of the bookshelf. Give them sky names: Aura, Wisp, Cloud. Mercury and Zephyr-adjacent energy; light, quick, everywhere.

Water-sign cats (Cancer, Scorpio, Pisces) — the deep-feeling ones, moved by tides you can't see. This is Luna's home territory: Naiad (the freshwater nymph — also Neptune's innermost moon), Nerissa (from the Greek for sea nymph), Nix (a moon of Pluto, one letter from the night goddess). Selene, Crescent — anything lunar lands here.

This is the shallow end of a real system. The full version — why a Scorpio cat guards doorways, why a Gemini cat narrates the house — is in the cats as zodiac signs guide and the complete cat astrology pillar.

The Method, In Short

Pick the register that matches the cat, not the register you'd want for yourself. The 3am sprinter is a Nova, not a Stella. The window-sill philosopher is a Selene, not a Quasar. If you want the name to be genuinely astrological rather than just space-flavored, find the sign first and pick from its element — a two-minute detour through the calculator that turns a pretty name into an accurate one. Cats ignore their names either way, of course. But they ignore a well-chosen one with more style.

Frequently Asked Questions

What are good celestial cat names?

The best celestial cat names draw from four sources: the Moon (Luna, Selene, Artemis, Crescent), the stars and constellations (Vega, Lyra, Cassiopeia, Nova), the planets and cosmic phenomena (Venus, Pluto, Nebula, Eclipse), and night-sky mythology (Nyx, Freya, Astraea). Cats are crepuscular — most active at dawn and dusk — which is why sky-and-night names have always fit them better than any other animal.

Why is Luna such a popular cat name?

Luna — Latin for Moon — has topped the annual most-popular female cat name rankings published by pet platforms like Rover for years running. The fit is almost too good: cats are crepuscular animals wired for twilight, their eyes are built for moonlight, and the association between cats and the Moon runs back to ancient Egypt, where the cat goddess Bastet carried lunar and protective symbolism. Luna is popular because it's simply the most accurate name in the language for a cat.

What are celestial female cat names?

The most-loved celestial names for female cats are Luna, Stella, Aurora, Nova, Selene, Vega, Lyra, Celeste, Andromeda, Cassiopeia, Astrid, and Nyx. Moon names and star names dominate the feminine register — Selene is the Greek Moon goddess, Stella and Astrid both mean star, and Cassiopeia is the night sky's throne-seated queen.

What cat name means star?

Names meaning star exist in almost every language: Stella (Latin), Astra (Greek), Seren (Welsh), Hoshi (Japanese), Citlali (Nahuatl), Sidra (Arabic, "of the stars"), Danica (Slavic, the morning star), Estelle (French), and Astrid (Old Norse, "divinely beautiful", long associated with stars). Any of them puts a star in your cat's name without using the word itself.

What are good astrological cat names by zodiac sign?

Match the name's element to your cat's sign. Fire-sign cats (Aries, Leo, Sagittarius) suit solar names: Helios, Sol, Flare. Earth-sign cats (Taurus, Virgo, Capricorn) suit grounded ones: Gaia, Flora, Ceres. Air-sign cats (Gemini, Libra, Aquarius) suit sky names: Aura, Wisp, Cloud. Water-sign cats (Cancer, Scorpio, Pisces) suit Moon and sea names: Luna, Selene, Naiad, Nix. The element carries the temperament, and the name should carry the element.

How do I find my cat's zodiac sign?

If you know your cat's birth date, the Sun sign follows the standard zodiac calendar — June 21 to July 22 is a Cancer cat, and so on. If you don't know the date, which is true for most adopted cats, a free pet zodiac calculator estimates the sign from an approximate birthday, and behavioral analysis in the Aetris app reconstructs the whole chart — Sun, Moon, Rising — without any birthday at all.