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

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Meaning and Origin

What does the name Moriarty mean? Find out below.

Origin and Meaning of Moriarty

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International Interest

From Irish Ó Muircheartaigh.

  1. A surname​ of Irish origin.
  2. Professor James Moriarty, fictional archenemy and nemesis of Sherlock Holmes; by extension any such archenemy or nemesis.
    Martha Nochimson, The passion of David Lynch: wild at heart in Hollywood:
    The town of Twin peaks, suddenly not energised by its mammary setting, is narrated as a large chess board on which the action is completely defined by the competing logic of Dale Cooper and his -like nemesis, Windom Earle.
  3. A city in New Mexico.

Notable Persons With the Last Name Moriarty

James Moriarty is a fictional character.


Erin Moriarty is an actor and actress. She was most prominent from 2010 to present. Erin was born on June 24th, 1994 in New York, U.S.


Cathy Moriarty is an actress. She has been prominent since 1980. Cathy was born on November 29th, 1960 in The Bronx, New York, US. Cathy is also known as Cathy Moriarty-Gentile.


Michael Moriarty is an actor/musician. He has been prominent since 1971. Michael was born on April 5th, 1941 in Detroit.


Liane Moriarty is a novelist. She was most prominent from 2004 to present. Liane was born in 1966 in Sydney.


P. was born on February 27th, 1939 in London.


Where is the name Moriarty popular?

International Interest for Moriarty

Interest is based how many people viewed this name from each country and is scaled based on the total views by each country so that large countries do not always show the most interest. Darker blue on the map indicates that people in the country are more likely to search for this name.

Longer bars in the bar graph indicate that people in the country are more interested in the name. Not all countries that have shown an interest in the name are listed in the bar graph.

United States
United Kingdom
New Zealand

Popularity in the US

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Popularity of Moriarty as a last name

The map shows the absolute popularity of the name Moriarty as a last name in each of the states. See other popular names in Massachusetts, New York, or Connecticut.

Ethnicity Distribution

Ethnicity Moriarty U.S.
  White 95.77% 64.26%
  African American 0.38% 11.96%
  Asian, Hawaiian, and Pacific Islander 0.57% 4.85%
  American Indian and Alaska Native 0.23% 0.69%
  Two or More Ethnicities 1.10% 1.76%
  Hispanic or Latino 1.95% 16.26%

Of Last Name Moriarty

People with the last name Moriarty are most frequently White

Entire United States

Fun Facts about the name Moriarty

  • How Popular is the name Moriarty? As a last name Moriarty was the 3,564th most popular name in 2010.
  • How unique is the name Moriarty? Out of 5,933,561 records in the U.S. Social Security Administration public data, the first name Moriarty was not present. It is possible the name you are searching has less than five occurrences per year.
  • Weird things about the name Moriarty: Your name in reverse order is Ytrairom. A random rearrangement of the letters in your name (anagram) will give Amriroty. How do you pronounce that?
  • How many people have the last name Moriarty? In 2010, the U.S. Census Bureau surveyed 10,005 people with the last name Moriarty.
  • How likely are you to meet someone with the last name of Moriarty? If you manage to meet 100,000 people in your life, chances are that 3 of them will have Moriarty as their last name.

What Moriartys Have Visited This Page?

Name poster for Moriarty

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

Most Popular Names

All Name Lists

  • Sources:
  • U.S. Census Bureau: Frequently Occurring Surnames from the Census 2000 (public domain).
  • Wiktionary: Titles and License.
  • Notable persons via Wikipedia: Titles and License. Click each image for the attribution information.