The boy's name Neptune \n(e)-ptu-ne, nep-tune\. Mythology name: Roman god of the sea.
For more information, see also the related name Poseidon.
A similar baby name is Newton.
Neptune is a very rare male first name and a popular surname (source: 1990 U.S. Census). Displayed below is the baby name popularity trend for the boy's name Neptune. Click here to compare Neptune with related baby names.
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