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Poseidon
Pronounced poh-SY-dən /poʊˈsaɪ.dən/Medium
Meaning: From Greek myth — Poseidon, the god of the sea, earthquakes, and horses; the meaning is debated (possibly 'lord/husband of the earth')Low
Popularity in the U.S. · SSA data
U.S. births per year (Social Security Administration, 1880–present). Pink marker = peak year.
SSA data updated May 2026. How we source & verify this data.
History & Origin
Poseidon comes from Greek mythology — Poseidon, the powerful god of the sea, earthquakes, and horses, brother of Zeus, who wields the three-pronged trident. The meaning of his name is debated, possibly 'lord or husband of the earth' (routes layered, which we note, as is the deity origin). A bold, mythic, modern name (said 'poh-SY-dən'; nickname Posy).
In the U.S. it registers thinly as a given name. Rare, the-god-of-the-sea, and mythic.
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Frequently Asked
What does the name Poseidon mean?
Poseidon is the Greek god of the sea; the literal meaning is debated (possibly 'lord of the earth'). We note the deity origin.
How do you pronounce Poseidon?
It's said poh-SY-dən /poʊˈsaɪ.dən/ — three syllables, stress on the second.
Is Poseidon a boy or girl name?
Poseidon is a boy's name.
How popular is Poseidon?
Poseidon is a very rare, recent name in the U.S.