Generate planet names grounded in catalog codes, mythology, alien phonics, or colonial shorthand, each with a note on what it signals
I'm naming a planet for a science fiction story, tabletop campaign, or worldbuilding project and need a batch of names that fit the setting. The planet is a [PLANET_TYPE:select:habitable earthlike world,hostile or toxic world,gas giant,ice or frozen world,desert world,ocean world,artificial or constructed world]. For the naming convention, I want [NAMING_CONVENTION:select:scientific catalog style like a real star designation,mythological or classical,invented alien-language style,human colonial naming]. Generate [COUNT:number:5-20] planet names that fit this type and convention. For each one, add a short one-line note on what the name signals about the world: its danger, its history, who named it, or what a traveler would expect on arrival. Vary the structure and length across the list so a catalog-style batch doesn't collapse into the same three-letter-and-number pattern, and a mythological batch doesn't recycle the same handful of god names. Keep the tone of [PLANET_TYPE] consistent with the convention: a hostile toxic world under catalog naming should read colder and more clinical than the same world named in an invented alien language. After the list, pick your top 3 and explain what makes them stand out.
Range: 5 - 20
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Get Early AccessPlanet names in fiction come from wherever the namer stands. Astronomers hand out catalog codes. Old religions get recycled into names for worlds that feel ancient before anyone has set foot on them. A first-contact survey crew picks something blunt and functional instead. A gas giant tagged with a real-looking exoplanet code carries a different weight than a jungle world named for a forgotten god, and most of that difference gets lost when every planet in a story sounds like it was named by the same person.
Set [PLANET_TYPE] to an earthlike world, a hostile or toxic world, a gas giant, an ice world, a desert world, an ocean world, or an artificial construct, then set [NAMING_CONVENTION] to steer the sound toward catalog style, mythological, invented alien, or human colonial. This tool returns [COUNT] names with a one-line note on what each one signals, so you know at a glance whether a name fits a dying colony outpost or a pristine world nobody has landed on yet.
Building a whole star system? The spaceship name generator covers the vessels traveling between these worlds, and the alien name generator names the species that might live there. If the planet needs native wildlife, the creature name generator fills in what's roaming the surface. Drop your favorite into the Dock Editor to start building the rest of the system around it.
Copy the prompt into the Dock Editor, or into ChatGPT, Claude, or Gemini, then set [PLANET_TYPE] to an earthlike world, a hostile or toxic world, a gas giant, an ice world, a desert world, an ocean world, or an artificial construct. Each type nudges the generator toward a different mood.
Set [NAMING_CONVENTION] to scientific catalog style, mythological, invented alien-language, or human colonial. This decides whether the name reads like a survey log entry or an ancient legend.
Set [COUNT] anywhere from 5 to 20. A small batch works for naming one planet in a scene, a larger batch works for populating a whole star chart.
Each name comes with a one-line note on what it signals about the world. Check the top 3 picks at the end if you're deciding between options.
A story that visits more than one star system needs planet names that don't all sound interchangeable. Run this tool with a different [NAMING_CONVENTION] for each system so a colonial mining world and an ancient alien homeworld don't share the same naming logic.
A ship jumps to a new system and the players ask what it's called. Set a high [COUNT] before a session starts and keep a list of planet names ready for whatever direction the crew flies.
Dialogue that name-drops a planet needs a name that sounds real when spoken aloud. Set [NAMING_CONVENTION] to mythological or human colonial for names that read naturally in a script.
Filling out a star map with dozens of systems takes a long time if every name comes one at a time. Set [COUNT] high and generate a full batch to plot across the map in one pass.
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