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MS-13

MS-13, or Mara Salvatrucha, is a transnational criminal gang that originated in Los Angeles in the 1980s among Salvadoran immigrants and refugees.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 26, 2026|2 min read| Fact-checked

MS-13, or Mara Salvatrucha, is a transnational criminal gang that originated in Los Angeles in the 1980s among Salvadoran immigrants and refugees. It later expanded across the United States, Central America, and beyond, and has been associated with violent crime, extortion, drug trafficking, and human smuggling. The gang is also known for its rivalry with the 18th Street gang. MS-13 has been reported as active beyond the United States and Central America, including Canada, which is relevant to Canadian law-enforcement and immigration policy discussions.

Origin and name

MS-13 formed in Los Angeles in the 1980s among Salvadoran immigrants who had fled civil conflict in El Salvador. The name Mara Salvatrucha is commonly explained as combining slang terms referring to a Salvadoran gang, and the number 13 is associated with the letter M.

Expansion and organization

The gang developed from local street-group beginnings into a transnational criminal network. Sources describe it as operating through loosely organized cliques and having members or affiliates across the United States and parts of Central America.

Criminal activity

MS-13 has been linked to a wide range of crimes, including extortion, drug trafficking, robbery, prostitution, murder, and human smuggling. It has gained a reputation for extreme violence in media and law-enforcement reporting.

Law-enforcement attention

MS-13 has been the subject of sustained law-enforcement and policy attention in the United States and Central America. U.S. government and congressional materials describe it as a major gang and transnational criminal organization.

Key facts

  • MS-13 began in Los Angeles during the 1980s among Salvadoran immigrants and refugees.
  • The name is commonly expanded as Mara Salvatrucha; the “13” is linked to the letter M and allegiance to the Mexican Mafia in some accounts.
  • The gang has been described by major sources as a violent transnational criminal organization.
  • Its crimes have included extortion, drug distribution, murder, robbery, prostitution, and human smuggling.
  • MS-13 spread from the United States into Central America, partly through deportations and migrant networks.
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Canadian context

MS-13 has been reported as active beyond the United States and Central America, including Canada, which is relevant to Canadian law-enforcement and immigration policy discussions.

Frequently asked questions

What does MS-13 stand for?
MS-13 is short for Mara Salvatrucha. Sources commonly explain “13” as referring to the letter M, sometimes linked to allegiance to the Mexican Mafia.
Where did MS-13 begin?
MS-13 began in Los Angeles, California, in the 1980s among Salvadoran immigrants and refugees.
What crimes is MS-13 associated with?
It has been associated with extortion, drug trafficking, murder, robbery, prostitution, and human smuggling.
Is MS-13 only active in the United States?
No. It originated in the United States but later spread into Central America and other places, becoming transnational.
Who are MS-13’s main rivals?
Its best-known rivalry is with the 18th Street gang.
Why is MS-13 widely known?
It is widely known because of its violent reputation, international spread, and repeated focus in law-enforcement and media coverage.

References

  1. Wikipediahttps://en.wikipedia.org/wiki/MS-13
    Supports: Origin in Los Angeles, name, and rivalry with 18th Street gang
  2. Encyclopaedia Britannicahttps://www.britannica.com/topic/MS-13
    Supports: Overview, criminal activities, origin, and spread including Canada
  3. BBC Newshttps://www.bbc.com/news/world-us-canada-39645640
    Supports: Origin in Los Angeles, meaning of name, and violent reputation
  4. U.S. Department of Justicehttps://www.justice.gov/d9/speeches/attachments/2017/04/18/department_of_justice_fact_sheet_on_ms-13_0.pdf
    Supports: Origin, name explanation, and U.S. law-enforcement description
  5. Congressional Research Servicehttps://www.congress.gov/crs_external_products/R/PDF/R45292/R45292.3.pdf
    Supports: Formation in Los Angeles, transnational spread, and criminal activities