Planet name generator

Generate unique planet names for sci-fi worldbuilding, games, and stories.

1 credit per run

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80+ planet name ideas by type

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Create names for habitable worlds, gas giants, and alien homeworlds.

Browse 80+ ideas by planet type below, or describe your world to get 50+ new names.

Six world types
Habitable worlds, gas giants, homeworlds, hellworlds, ice worlds and catalog codes.
Names and codes
Spoken names for characters, catalog codes like Kepler-22b for star charts.
Free to use
Every name here is free for your stories, maps and games.

Match the sound to the world
Hard sounds suit a barren rock. Long, open vowels suit a lush or ocean world.
Use a name and a code
Locals may call a world one thing while star charts list a code. Using both makes a setting feel real.
Name it after its star
Real exoplanets take their star's name plus a letter, like 51 Pegasi b. Do the same for hard sci-fi.
Borrow from myth
Most planets in our solar system are named after Roman gods. Myths from any culture can give your worlds a shared theme.
Keep it easy to say
Readers will see the name many times. Two or three syllables are easier to remember than six.

Want names made for yours? Describe what you're naming and Nomi finds names that fit.

Start with what the world is like: hot, frozen, lush or barren. Then pick sounds that fit, or use a catalog code for a scientific feel.

Most planets in our solar system are named after Roman gods. Exoplanets take their star's name plus a letter, like Kepler-22b.

The letter shows the order of discovery around a star. The first planet found is b, since the star itself counts as a.

Gas giants suit big, slow names with long vowels, like Jupiter and Saturn. The gas giant list on this page has more.

Yes. Every name on this page is free to use in stories, games and maps.

Yes. Describe the world, such as a desert moon or an ocean planet, to get 50+ new names.