First Name
in the U.S.
since 1880
Last Name
in the U.S.
in 2010
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Meaning and Origin

What does the name Neptune mean? Find out below.

Origin and Meaning of Neptune

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Webster's Unabridged Dictionary
noun Nep"tune
  1. [Rom. Myth] The son of Saturn and Ops, the god of the waters, especially of the sea. He is represented as bearing a trident for a scepter.
  2. [Astron] The remotest major planet of our solar system, discovered -- as a result of the computations of Leverrier, of Paris -- by Galle, of Berlin, September 23, 1846. It is classed as a gas giant, and has a radius of 22,716 km and an estimated mass of 1.027 x 1026 kg, with an average density of 2.27 g/cc. Its mean distance from the sun is about 5,000,000,000 km (3,106,856,000 miles), and its period of revolution is about 164.78 years.

Etymology: L. Neptunus

Other Dictionary Sources
  1. A giant planet with a ring of ice particles; the 8th planet from the sun is the most remote of the gas giants ("the existence of Neptune was predicted from perturbations in the orbit of Uranus and it was then identified in 1846")
  2. (Roman mythology) god of the sea; counterpart of Greek Poseidon

From Latin Neptūnus, from Proto-Indo-European *nébʰos (“cloud”) (source of Ancient Greek νέφος (néphos), Sanskrit नभस् (nábhas), etc.), with the sense of "wet, moist."

  1. (Roman mythology) The god of the ocean and of earthquakes. The same as Poseidon in Greek mythology.
  2. The eighth planet in our solar system, represented in astronomy and astrology by ♆.
  3. An unincorporated community in West Virginia.
  4. An unincorporated community in Wisconsin.

Neptune was also found in the following language(s): French

Notable Persons Named Neptune


Notable Persons With the Last Name Neptune

Sailor Neptune is an animanga character.


Their military service ended in 1946.




John Neptune was a shaman and shamanism. John was given the name Bungawarrawit on July 22nd, 1767. John is also known as Bungawarrawit. He left this life on May 8th, 1865.


Yvon Neptune is an office holder. Yvon was born on November 8th, 1946 in Cavaellon.


Where is the name Neptune popular?

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Popularity of Neptune as a last name

The map shows the absolute popularity of the name Neptune as a last name in each of the states. See other popular names in Ohio, Maine, or California.

Common first names for Neptune

Ethnicity Distribution

Ethnicity Neptune U.S.
  White 48.92% 64.26%
  African American 36.33% 11.96%
  Asian, Hawaiian, and Pacific Islander 0.36% 4.85%
  American Indian and Alaska Native 7.37% 0.69%
  Two or More Ethnicities 3.96% 1.76%
  Hispanic or Latino 3.06% 16.26%

Of Last Name Neptune

People with the last name Neptune are most frequently White or African American

Entire United States

Fun Facts about the name Neptune

  • How Popular is the name Neptune? As a last name Neptune was the 17,033rd most popular name in 2010.
  • When was the first name Neptune first recorded in the United States? The oldest recorded birth by the Social Security Administration for the name Neptune is Saturday, December 25th, 1875.
  • How unique is the name Neptune? From 1880 to 2017 less than 5 people per year have been born with the first name Neptune. Hoorah! You are a unique individual.
  • Weird things about the name Neptune: Your name in reverse order is Enutpen. A random rearrangement of the letters in your name (anagram) will give Npuntee. How do you pronounce that?
  • How many people have the last name Neptune? In 2010, the U.S. Census Bureau surveyed 1,668 people with the last name Neptune.
  • How likely are you to meet someone with the last name of Neptune? Chances are, most people haven't met someone with Neptune as their last name since less than 1 person in 175k people have that last name. If you know one, consider yourself lucky!

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Name poster for Neptune

Name poster for Neptune(click to save the high quality version)

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  • Sources:
  • U.S. Census Bureau: Frequently Occurring Surnames from the Census 2000 (public domain).
  • 1913 Webster's Revised Unabridged Dictionary via the Collaborative International Dictionary of English (License)
  • Other Dictionary Sources: WordNet 3.1 Copyright 2006 by Princeton University (License).
  • Wiktionary: Titles and License.
  • Notable persons via Wikipedia: Titles and License. Click each image for the attribution information.