First Name
in the U.S.
since 1880
Last Name
in the U.S.
in 2010
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How to Pronounce Janus

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Meaning and Origin

What does the name Janus mean? Find out below.

Origin and Meaning of Janus

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Webster's Unabridged Dictionary
noun Ja"nus
A Latin deity represented with two faces looking in opposite directions. Numa is said to have dedicated to Janus the covered passage at Rome, near the Forum, which is usually called the Temple of Janus. This passage was open in war and closed in peace.

Etymology: L. See January

Other Dictionary Sources
  1. (Roman mythology) the Roman god of doorways and passages; is depicted with two faces on opposite sides of his head

From Latin Iānus (“the Roman god Janus”).

  1. (Roman mythology) The god of doorways, gates and transitions, and of beginnings and endings, having two faces looking in opposite directions.
  2. (attributively) Used to indicate things with two faces (such as animals with diprosopus) or aspects; or made of two different materials; or having a two-way action.
    Janus cat, Janus particle‎
    1. (chemistry, attributively) Used to indicate an azo dye with a quaternary ammonium group, frequently with the diazo component being safranine.
      green B is a dye used widely in histology to stain cells for microscopic examination.‎
  3. (figuratively) A two-faced person, a hypocrite.
  4. (astronomy) A moon of Saturn.

Janus was also found in the following language(s): Danish, Estonian, and Faroese

Notable Persons Named Janus

Janus Friis is an entrepreneur. Janus was born on June 26th, 1976 in Copenhagen.


Janus was royalty. His career lasted from 1398 to 1432. Janus was born as the child of James I of Cyprus and Helvis of Brunswick-Grubenhagen in Genoa. He died on June 29th, 1432.


Janus del Prado is an actor, celebrity, comedian, and television personality. He has had major accomplishments since 1992. Janus was given the name Janus Renato Robles Mateo del Prado on November 19th, 1984 in Philippines.


Janus was born in 1974 in Denmark.


Janus Drachmann is a soccer player for the SønderjyskE Fodbold, FC Nordsjælland, AC Horsens, Denmark national under-19 football team, and Denmark national under-21 football team. Janus was born on May 11th, 1988 in Denmark.


Janus was born on February 26th, 1881 in Tórshavn. Janus is also known as Jens Hendrik Oliver Djurhuus. He left this life on September 1st, 1948.


Notable Persons With the Last Name Janus

Samantha Womack is an actress, singer, and director. She was most prominent from 1990 to present. Samantha was given the name Samantha Zoe Janus on November 2nd, 1972 in Brighton, East Sussex, England.


Janus was royalty. His career lasted from 1398 to 1432. Janus was born as the child of James I of Cyprus and Helvis of Brunswick-Grubenhagen in Genoa. He died on June 29th, 1432.


Jaroslav Janus is a hockey player for the HC Sparta Praha in the Kontinental Hockey League. His ongoing career started in 2009. Jaroslav was born on September 21st, 1989 in Prešov.


Krzysztof Janus is a soccer player for the Zagłębie Lubin, GKS Bełchatów, KS Cracovia (football), KS Polkowice, and Wisła Płock. Krzysztof was born on March 25th, 1986 in Brzeg Dolny.


Goran was born on March 27th, 1970 in Yugoslavia.


Joseph was born in 1969.


Where is the name Janus popular?

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Popularity of Janus as a last name

The map shows the absolute popularity of the name Janus as a last name in each of the states. See other popular names in Illinois, Pennsylvania, or New York.

Ethnicity Distribution

Ethnicity Janus U.S.
  White 92.08% 64.26%
  African American 1.89% 11.96%
  Asian, Hawaiian, and Pacific Islander 1.43% 4.85%
  American Indian and Alaska Native 0.41% 0.69%
  Two or More Ethnicities 1.52% 1.76%
  Hispanic or Latino 2.67% 16.26%

Of Last Name Janus

People with the last name Janus are most frequently White

Entire United States

Fun Facts about the name Janus

  • How Popular is the name Janus? Janus is the 29,641st most popular name of all time. As a last name Janus was the 13,903rd most popular name in 2010.
  • How many people with the first name Janus have been born in the United States? From 1880 to 2017, the Social Security Administration has recorded 163 babies born with the first name Janus in the United States. That's more than enough people named Janus to occupy the territory of Pitcairn Islands (United Kingdom) with an estimated population of 66 (as of July 1, 2008).
  • What year were 5 or more babies first named Janus? The name was first given to 5 or more babies in the year 1922 when it was given as a first name to 5 new born babies.
  • When was Janus first recorded in the United States? The oldest recorded birth by the Social Security Administration for the first name Janus is Monday, November 8th, 1875.
  • What year had the most people named Janus born? The highest recorded use of the first name Janus was in 1956 with a total of 16 babies.
  • Weird things about the name Janus: Your name in reverse order is Sunaj. A random rearrangement of the letters in your name (anagram) will give Sunaj. How do you pronounce that?
  • How many people have the last name Janus? In 2010, the U.S. Census Bureau surveyed 2,172 people with the last name Janus.
  • How likely are you to meet someone with the last name of Janus? Chances are, most people haven't met someone with Janus as their last name since less than 1 person in 135k people have that last name. If you know one, consider yourself lucky!

What Januss Have Visited This Page?

Name poster for Janus

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

Most Popular Names

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  • Sources:
  • U.S. Census Bureau: Frequently Occurring Surnames from the Census 2000 (public domain).
  • U.S. Social Security Administration: Popular Baby Names, Death Master File (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.