Poseidon
Gender: Boy
Meaning: World ruler, brown chief
Origin: Irish/Celtic
Popularity: Ranked #4668 in 2025 with 22 babies born.
History: Poseidon is a name with Irish/Celtic roots, containing the element 'don' meaning world ruler, brown chief.
Name length: 8 letters
How common is Poseidon? About 1 in 151,296 babies born in 2025 were named Poseidon, or roughly 0.1 per day in the United States.
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Frequently asked about Poseidon
What does the name Poseidon mean?
Poseidon means “World ruler, brown chief” from Irish/Celtic roots.
What is the origin of the name Poseidon?
Poseidon has Irish/Celtic origin. The traditional meaning is “World ruler, brown chief”.
How popular is Poseidon?
Poseidon ranked #4539 in 2025 — given to 22 babies that year.
When was Poseidon most popular?
Poseidon peaked in 2022 with 33 babies registered that year.
Is Poseidon a boy or girl name?
Poseidon is predominantly a boys' name — over 90% of Poseidons in registered births are male.
Is the name Poseidon rising or falling in popularity?
Poseidon has fallen 535 spots in the rankings over the last 5 years — from #4004 in 2020 to #4539 in 2025.
How long has Poseidon been recorded?
Poseidon appears in birth records across 16 years — from 2010 through 2025.