Naming a cat can be a small celebration of personality, mood, or the things that fascinate you — and for many owners that means looking skyward. Whether you like myth, astronomy, or whimsical sounds, planet- and celestial-inspired names give your cat a story before you even call them.
There are 54 Planet Names for Cats, ranging from Aphrodite to Zeus. Each entry is compactly organized with Source, Pronunciation, Meaning so you can scan origins and sounds at a glance, compare options, and pick what fits your cat — you’ll find below.
How do I pick the right planet-inspired name for my cat?
Think about your cat’s appearance, temperament, and the name’s sound; short, clear names are easiest for cats to learn, while mythic or exotic choices can match bold personalities. Use the Source and Pronunciation columns below to judge cultural fit and ease of use.
Will a planet-based name confuse my cat or other people?
Most pets adapt quickly to a consistent name, especially one with distinct syllables; if you’re concerned about recognition, choose a two-syllable option from the list and practice it with treats. The Meaning column can help explain the name to friends and family.
Planet Names for Cats
| Name | Source | Pronunciation | Meaning |
|---|---|---|---|
| Mercury | Solar System planet | MER-kyoo-ree | Swift messenger, small and speedy |
| Venus | Solar System planet | VEE-nus | Beautiful, bright and warm |
| Earth | Solar System planet | URTH | Home world, familiar and grounded |
| Luna | Major moon | LOO-nah | The Moon, gentle and luminous |
| Moon | Major moon | MOON | Earth’s natural satellite, cozy and familiar |
| Io | Major moon | EYE-oh | Volcanic and lively |
| Europa | Major moon | yoo-ROH-pah | Icy shell, mysterious below |
| Ganymede | Major moon | GAN-ih-meed | Largest moon, noble and grand |
| Callisto | Major moon | kah-LIS-toh | Ancient, cratered and quiet |
| Titan | Major moon | TY-tan | Big, blanketed in thick atmosphere |
| Enceladus | Major moon | en-SEH-lah-dus | Icy geysers and hidden ocean |
| Rhea | Major moon | REE-uh | Soft-sounding, classical |
| Mimas | Major moon | MY-mas | Small with big crater (like an eye) |
| Dione | Major moon | DY-oh-nee | Graceful and classical |
| Tethys | Major moon | TEH-this | Icy and bright |
| Ariel | Major moon | AIR-ee-el | Playful, literary and bright |
| Umbriel | Major moon | UM-bree-el | Dark, mysterious and poetic |
| Miranda | Major moon | mih-RAN-dah | Tiny, dramatic and fractured |
| Oberon | Major moon | OH-buh-ron | Royal and Shakespearean |
| Titania | Major moon | ty-TAY-nee-uh | Queenly and lyrical |
| Triton | Major moon | TRY-ton | Cold, retrograde and unique |
| Charon | Major moon | SHAHR-on | Pluto’s companion, close and loyal |
| Phobos | Major moon | FOH-bos | Swift, small and shadowy |
| Deimos | Major moon | DEE-mos | Calm companion and quieter twin |
| Pluto | Dwarf planet | PLOO-toh | Small, distant and charming |
| Ceres | Dwarf planet | SEER-eez | Home of the largest asteroid/dwarf planet, earthy |
| Eris | Dwarf planet | EE-ris | Discordous but striking |
| Haumea | Dwarf planet | how-MAY-uh | Elongated and fast-spinning |
| Makemake | Dwarf planet | MAH-keh-MAH-keh | Mythic, festive and tropical-named |
| Uranus | Solar System planet | YUR-uh-nus | Unconventional, tilted and breezy |
| Neptune | Solar System planet | NEP-tyoon | Deep blue, elegant and dreamy |
| Hermes | Myth (Mercury’s Greek) | HUR-meez | Messenger god, clever and quick |
| Aphrodite | Myth (Venus’s Greek) | af-roh-DY-tee | Goddess of love and beauty |
| Zeus | Myth (Jupiter’s Greek) | ZOOS | Kingly and thunderous |
| Cronus | Myth (Saturn’s Greek) | KROH-nus | Ancient, serious and strong |
| Ouranos | Myth (Uranus’s Greek) | uh-RAY-nohs | Sky personified, vast and lofty |
| Poseidon | Myth (Neptune’s Greek) | poh-SY-dun | Sea god, powerful and fluid |
| Proxima | Exoplanet (Proxima b) | prok-SIM-uh | Nearest star’s planet, neighborly and small |
| Osiris | Exoplanet nickname | oh-SYE-ris | Ancient Egyptian god, rebirth and mystery |
| Tatooine | Fictional planet (Star Wars) | TAT-oh-een | Twin-sunned desert world, rugged charm |
| Arrakis | Fictional planet (Dune) | ah-RAH-kis | Desert planet, mysterious and powerful |
| Vulcan | Fictional planet (Star Trek/myth) | VUL-kan | Logical, fiery and forged in myth |
| Pandora | Fictional planet (Avatar) | PAN-dor-uh | Lush, vibrant and life-filled |
| Krypton | Fictional planet (Superman) | KRIP-ton | Home of Superman, strong and rare |
| Coruscant | Fictional planet (Star Wars) | ko-ROO-sant | City-covered capital world, bustling and grand |
| Gallifrey | Fictional planet (Doctor Who) | GAL-ih-free | Time Lords’ home, ancient and clever |
| Endor | Fictional moon/planet (Star Wars) | EN-dor | Forested moon with friendly natives |
| Bespin | Fictional planet (Star Wars) | BES-pin | Gas giant with cloud city, soft and airy |
| Hoth | Fictional planet (Star Wars) | HOTH | Icy, stark and bold |
| Mustafar | Fictional planet (Star Wars) | mus-TAH-far | Volcanic lava world, intense and dramatic |
| Dagobah | Fictional planet (Star Wars) | DAH-go-bah | Swampy, mysterious and wise |
| Endymion | Myth/fictional planetary name | en-DIM-ee-on | Dreamy mythic turn, restful and poetic |
| Selene | Myth (moon goddess) | seh-LEE-nee | Lunar goddess, soft and silver |
| Kef-Cloud | Fictional (light, whimsical planetary-inspired) | KEF-cloud | Whimsical name inspired by cloudy planets |
Images and Descriptions
Mercury
Closest planet to the Sun, Mercury is a compact, rocky world with extreme temperatures and a quick orbit. Its name evokes speed and curiosity, a lively fit for an active, mischievous cat who darts through the house like a comet.
Venus
Second planet from the Sun, Venus is known for its brightness and dense cloud cover. Named for the Roman goddess of beauty, it suits a graceful, sassy cat with a sunny or glamorous personality.
Earth
Our home planet, Earth supports life and richly varied landscapes. As a cat name, it’s simple, comforting, and distinctive for a grounded, affectionate pet who feels very much at home.
Luna
Common name for Earth’s Moon, Luna carries a soft, serene vibe. It’s a popular cat name for pets with calm, reflective personalities or silvery fur reminiscent of moonlight.
Moon
Short and friendly, “Moon” refers to Earth’s satellite. It’s a cozy, whimsical name for a cat who feels like a nighttime companion or lights up your life.
Io
One of Jupiter’s closest moons, Io is volcanically active and colorful. The name is short, punchy, and perfect for a fiery, energetic cat with bold markings or a feisty temperament.
Europa
Jupiter’s smooth, ice-covered moon thought to hide an ocean beneath. Europa suggests mystery and quiet curiosity, ideal for an inquisitive or reserved cat who hides in cozy nooks.
Ganymede
Jupiter’s largest moon and the biggest in the Solar System, Ganymede is stately and impressive. As a cat name it implies size and presence, fitting for a dignified or mellow companion.
Callisto
A heavily cratered Jovian moon, Callisto has a rugged, timeless feel. The name suits a mellow, wise cat or one with striking, dusky markings that suggest age and character.
Titan
Saturn’s largest moon, Titan has a dense nitrogen atmosphere and complex organic chemistry. The name implies strength and mystery, great for a large, fluffy, or quietly curious cat.
Enceladus
A small, icy moon of Saturn known for geysers ejecting water ice. Enceladus feels elegant and otherworldly, a unique choice for a playful cat who loves water or surprises.
Rhea
A mid-sized moon of Saturn with a dusty, cratered surface. Rhea is short and lyrical, suited to a gentle, graceful cat with a soft temperament and classical presence.
Mimas
A small Saturnian moon famous for a large impact crater. Mimas is compact and quirky, a cute name for a tiny or one-eyed bandit-style cat with big personality.
Dione
A medium-sized moon of Saturn with varied terrain. Dione is elegant and slightly exotic, great for a poised, sleek cat with a refined demeanor.
Tethys
Saturn’s moon with broad fractures and bright ice. Tethys is short and distinctive, fitting for a light-colored or active cat that explores every corner of the home.
Ariel
One of Uranus’s inner moons named after a Shakespearean spirit. Ariel is charming and whimsical, perfect for a lively, adventurous cat who seems almost magical.
Umbriel
A darker-toned Uranian moon with a melancholic name. Umbriel suits a shadowy, shy, or introspective cat who prefers quiet spots and mysterious behavior.
Miranda
A small Uranian moon with extreme cliffs and varied surface features. Miranda is a dramatic, endearing name for an active or theatrically mischievous cat with bold markings.
Oberon
A large moon of Uranus named after a fairy king. Oberon is stately and whimsical, good for a proud, aloof cat with a regal bearing.
Titania
Uranus’s largest moon named after a fairy queen. Titania is elegant and musical, ideal for a poised female cat who commands attention with quiet charisma.
Triton
Neptune’s largest moon with a cold, active surface and unusual orbit. Triton is strong and distinctive, excellent for a bold, independent cat with striking features.
Charon
Pluto’s large moon, Charon has a very close relationship with its parent. Charon conveys loyalty and companionship, fitting for an affectionate cat who sticks close by.
Phobos
One of Mars’s tiny moons with a name meaning fear. Phobos is short and edgy, suited for a skittish, quick cat who zips around in a blur.
Deimos
Mars’s smaller moon named for dread’s counterpart. Deimos is gentle and slightly mysterious, a good fit for a reserved, observant feline friend.
Pluto
Once classified as the ninth planet, Pluto is now a dwarf planet with a cold, distant orbit. The name feels cute and noble simultaneously, great for a small, sassy, or shy cat with character.
Ceres
The largest object in the asteroid belt and dwarf planet, Ceres has a gentle, approachable name. Great for a grounded, curious cat who brings a sense of everyday wonder.
Eris
A distant, icy dwarf planet named after the goddess of strife. Eris is short, punchy, and memorable—ideal for a feisty, opinionated cat who stirs up playful trouble.
Haumea
A fast-rotating, elongated dwarf planet in the Kuiper Belt named after a Hawaiian goddess. Haumea is exotic and rhythmic, suitable for a sleek, agile cat with unique markings.
Makemake
A bright Kuiper Belt dwarf planet named after a Rapa Nui deity. Makemake is fun and memorable, perfect for a bouncy, sociable cat with a playful spirit.
Uranus
An ice giant tipped on its side, Uranus has a quirky, uncommon vibe. It’s a bold choice for an eccentric or cool-headed cat who marches to their own drum.
Neptune
A distant, blue ice giant named for the sea god. Neptune evokes mystery and calm, fitting for a sleek, reserved cat with deep-colored fur.
Hermes
Greek counterpart to Mercury, Hermes was the fleet-footed messenger god. The name is zippy and clever, ideal for a nimble, intelligent cat who solves puzzles and opens doors.
Aphrodite
Greek goddess linked to Venus, Aphrodite carries beauty and charm. It’s a graceful, feminine name for a soft, affectionate cat with a magnetic presence.
Zeus
Greek equivalent of Jupiter’s deity, Zeus suggests authority and charisma. This bold name fits a commanding, confident cat who rules the household with presence.
Cronus
Greek counterpart of Saturn, Cronus evokes an older, imposing figure. The name suits a dignified, slightly stoic cat with a solid, reliable nature.
Ouranos
Greek sky god after whom Uranus is named. Ouranos feels noble and airy, a poetic choice for a lofty, detached cat who gazes out the window.
Poseidon
Greek sea-god equivalent to Neptune, Poseidon suggests depth and strength. It matches a cat with flowing fur or a love of lounging near water bowls and lakeside dreams.
Proxima
From Proxima Centauri b, our nearest known exoplanet candidate. Proxima feels friendly and futuristic, great for a curious cat who explores every corner and is always nearby.
Osiris
Used as a popular name for HD 209458 b (nicknamed Osiris), this evokes ancient myth and mystery. The name suits a regal, mysterious cat with a quietly commanding presence.
Tatooine
A famous Star Wars desert planet with twin suns and resilient inhabitants. Tatooine is playful and exotic, ideal for a sandy-colored, adventurous cat with boundless curiosity.
Arrakis
The desert planet central to Dune, famed for spice and epic politics. Arrakis is dramatic and evocative, suited for an intense, dignified cat with a commanding aura.
Vulcan
Star Trek’s Vulcan (and Roman god of fire) suggests intellect and restraint. Vulcan is crisp and strong, perfect for a poised, independent, intelligent feline.
Pandora
The living moon and setting for Avatar’s lush ecosystems, Pandora evokes natural wonder and vivid colors. It’s charming for a playful, vividly patterned cat who brightens a room.
Krypton
Superman’s home world, known for power and alien beauty. Krypton makes a bold, heroic name for a striking, confident cat with a powerful presence.
Coruscant
The gleaming city-planet of Star Wars, Coruscant evokes cosmopolitan energy and grandeur. It’s fitting for a social, attention-loving cat who thrives in busy households.
Gallifrey
The Doctor’s home planet, Gallifrey feels wise, quirky, and timeless. It suits a contemplative, curious cat with an old-soul air and eccentric habits.
Endor
The forested moon home to the Ewoks, Endor suggests woodland mystery and coziness. It’s cute and earthy for a furry, cuddly cat who loves hiding in blankets.
Bespin
A gas giant known for its Cloud City, Bespin is breezy and elegant. The name fits a light-footed, soft-coated cat with a calm, floating grace.
Hoth
The icy rebel base planet in Star Wars, Hoth is short and punchy. It’s great for a white-coated or bold, hardy cat with a chill attitude.
Mustafar
A lava-scarred world from Star Wars with dramatic landscapes. Mustafar is intense and spicy, a vivid name for a fiery, high-energy cat with dramatic flair.
Dagobah
Yoda’s swampy exile world, Dagobah feels misty and mystical. It’s a warm, quirky fit for a contemplative cat who loves hidden perches and sleepy solitude.
Endymion
Associated in myth with the moon and timeless sleep, Endymion is evocative and gentle. It suits a tranquil, dreamy cat who naps in sunbeams and inspires quiet affection.
Selene
Greek moon goddess associated with the night and lunar glow. Selene is elegant and graceful, ideal for a sleek, silver-toned or serene cat who moves like moonlight.
Kef-Cloud
A playful, planet-like name meant to invoke misty gas giants and soft textures. Short, friendly, and imaginative for a cuddly cat who drifts through rooms like a cloud
