The List of Long Island law enforcement agencies provides an inclusive list of law enforcement agencies serving New York's Long Island. This includes those agencies serving the

New York City New York, often called New York City or NYC, is the most populous city in the United States. With a 2020 population of 8,804,190 distributed over , New York City is also the most densely populated major city in the Un ...

boroughs of

Brooklyn Brooklyn () is a borough of New York City, coextensive with Kings County, in the U.S. state of New York. Kings County is the most populous county in the State of New York, and the second-most densely populated county in the United States, be ...

and

Queens Queens is a borough of New York City, coextensive with Queens County, in the U.S. state of New York. Located on Long Island, it is the largest New York City borough by area. It is bordered by the borough of Brooklyn at the western tip of Long ...

on the western portion of Long Island along with those serving the suburban counties of Nassau County and Suffolk County.

Federal government agencies

* Bureau of Alcohol, Tobacco, Firearms and Explosives *

Amtrak Police Department The Amtrak Police Department (APD) is a quasi-federal railroad police department and the law enforcement agency of Amtrak (also known as the National Railroad Passenger Corporation), the government-owned passenger train system in the United Sta ...

Department of Defense Police United States Department of Defense Police (or DoD Police) are the uniformed civilian police officers of the United States Department of Defense, various branches of the United States Armed Forces (such as the Department of the Navy), or specific ...

Diplomatic Security Service The Diplomatic Security Service (DSS or DS) is a security and law enforcement agency that acts as the operational division of the Bureau of Diplomatic Security, which is a branch of the United States Department of State. Its primary mission is ...

Drug Enforcement Administration The Drug Enforcement Administration (DEA; ) is a United States federal law enforcement agency under the U.S. Department of Justice tasked with combating drug trafficking and distribution within the U.S. It is the lead agency for domestic en ...

* Federal Air Marshal Service *

Federal Bureau of Investigation The Federal Bureau of Investigation (FBI) is the domestic intelligence and security service of the United States and its principal federal law enforcement agency. Operating under the jurisdiction of the United States Department of Justice, ...

Federal Bureau of Prisons The Federal Bureau of Prisons (BOP) is a United States federal law enforcement agency under the Department of Justice that is responsible for the care, custody, and control of incarcerated individuals who have committed federal crimes; that i ...

* Federal Reserve Police *

Immigration and Customs Enforcement The U.S. Immigration and Customs Enforcement (ICE) is a federal law enforcement agency under the U.S. Department of Homeland Security. ICE's stated mission is to protect the United States from the cross-border crime and illegal immigration th ...

IRS Criminal Investigation Division Internal Revenue Service, Criminal Investigation (IRS-CI) is the United States federal law enforcement agency responsible for investigating potential criminal violations of the U.S. Internal Revenue Code and related financial crimes, such as mone ...

National Park Service Ranger National Park Service rangers are among the uniformed employees charged with protecting and preserving areas set aside in the National Park System by the United States Congress and the President of the United States. While all employees of the ag ...

(Law Enforcement) *

Naval Criminal Investigative Service The United States Naval Criminal Investigative Service (NCIS) is the primary law enforcement agency of the U.S. Department of the Navy. Its primary function is to investigate criminal activities involving the Navy and Marine Corps, though its ...

* Smithsonian Police (for the

George Gustav Heye Center The National Museum of the American Indian–New York, the George Gustav Heye Center, is a branch of the National Museum of the American Indian at the Alexander Hamilton U.S. Custom House in Manhattan, New York City. The museum is part of the Sm ...

and the

Cooper Hewitt, Smithsonian Design Museum Cooper Hewitt, Smithsonian Design Museum is a design museum housed within the Andrew Carnegie Mansion in Manhattan, New York City, along the Upper East Side's Museum Mile (New York City), Museum Mile. It is one of 19 museums that fall under the ...

) *

U.S. Army Criminal Investigation Command The United States Army Criminal Investigation Division (USACID), previously known as the United States Army Criminal Investigation Command (USACIDC) is the primary federal law enforcement agency of the United States Department of the Army. Its p ...

United States Coast Guard The United States Coast Guard (USCG) is the maritime security, search and rescue, and law enforcement service branch of the United States Armed Forces and one of the country's eight uniformed services. The service is a maritime, military, mu ...

* U.S. Customs and Border Protection * United States Federal Protective Service *

U.S. Fish and Wildlife Service The United States Fish and Wildlife Service (USFWS or FWS) is an agency within the United States Department of the Interior dedicated to the management of fish, wildlife, and natural habitats. The mission of the agency is "working with othe ...

United States Marshals Service The United States Marshals Service (USMS) is a federal law enforcement agency in the United States. The USMS is a bureau within the U.S. Department of Justice, operating under the direction of the Attorney General, but serves as the enforc ...

** U.S. Marshals Service Eastern District of New York *

United States Park Police The United States Park Police (USPP) is one of the oldest uniformed federal law enforcement agencies in the United States. It functions as a full-service law enforcement agency with responsibilities and jurisdiction in those National Park Servic ...

United States Postal Inspection Service The United States Postal Inspection Service (USPIS), or the Postal Inspectors, is the law enforcement arm of the United States Postal Service. It supports and protects the U.S. Postal Service, its employees, infrastructure, and customers by enf ...

United States Postal Police The United States Postal Inspection Service (USPIS), or the Postal Inspectors, is the law enforcement arm of the United States Postal Service. It supports and protects the U.S. Postal Service, its employees, infrastructure, and customers by enfor ...

* U.S. Probation and Pretrial Services System *

United States Secret Service The United States Secret Service (USSS or Secret Service) is a federal law enforcement agency under the Department of Homeland Security charged with conducting criminal investigations and protecting U.S. political leaders, their families, and ...

* United States Department of Veterans Affairs Police (at the Brooklyn VA Hospital, St. Albans Community Living Center and Northport VA Hospital)

State agencies operating on Long Island

* New York State Office of the Attorney General ** Investigations Division *

Metropolitan Transportation Authority Police Department The Metropolitan Transportation Authority Police Department (MTAPD) is the police agency of New York's Metropolitan Transportation Authority Officers of the MTAPD are fully empowered under the New York State Public Authorities Law and are com ...

New York State Department of Corrections and Community Supervision New is an adjective referring to something recently made, discovered, or created. New or NEW may refer to: Music * New, singer of K-pop group The Boyz Albums and EPs * ''New'' (album), by Paul McCartney, 2013 * ''New'' (EP), by Regurgitator, ...

* New York State Court Officers * New York State Department of Environmental Conservation Police *

New York State Forest Rangers The New York State Forest Rangers (NYS Forest Rangers), is one of the law enforcement agencies of the New York State Department of Environmental Conservation, Division of Forest Protection. NYS Forest Rangers are New York State police officers, a ...

* New York State Office of Mental Health Police *

New York State Department of Motor Vehicles The New York State Department of Motor Vehicles (NYSDMV or DMV) is the department of the New York state government responsible for vehicle registration, vehicle inspections, driver's licenses, learner’s permits, photo ID cards, and adjudicat ...

** Division of Field Investigation * New York State Park Police * New York State Office for People With Developmental Disabilities Police *

New York State Police The New York State Police (NYSP) is the state police of the state of New York in the United States. It is part of the New York State Executive Department, and employs over 5,000 sworn state troopers and 711 civilian members. History The Stat ...

* New York State Division of Homeland Security * New York State Division of Military and Naval Affairs * New York State University Police *

New York State Department of Taxation and Finance The New York State Department of Taxation and Finance (NYSDTF) is the department of the New York state government responsible for taxation and revenue, including handling all tax forms and publications, and dispersing tax revenue to other agencie ...

** Criminal Investigations Division **

New York State Office of Tax Enforcement The New York State Office of Tax Enforcement (OTE) is a law enforcement entity of the New York State Department of Taxation and Finance (DTF) that conducts criminal and civil investigations, investigators employed in the office carry firearms and ...

Bi-state agencies

Port Authority of New York and New Jersey Police Department The Port Authority of New York and New Jersey Police Department, or Port Authority Police Department (PAPD), is a law enforcement agency in New York and New Jersey, the duties of which are to protect and to enforce state and city laws at all th ...

(JFK Airport and LGA Airport in Queens) * Waterfront Commission of New York Harbor Police (Brooklyn)

New York City

New York City Police Department The New York City Police Department (NYPD), officially the City of New York Police Department, established on May 23, 1845, is the primary municipal law enforcement agency within the City of New York, the largest and one of the oldest in ...

(Police Officers) *

New York City Department of Environmental Protection Police The New York City Department of Environmental Protection Police, also known as DEP Police, and formerly known as the Bureau of Water Supply Police and the Aqueduct Police, is a law enforcement agency in New York City whose duties are to protect ...

(Police Officers) * Fire Department of the City of New York Fire Marshals (Police Officers) * New York City Department of Correction (Corrections Officers) * New York City Department of Investigation (Special Officers) *

New York City Sheriff's Office The New York City Sheriff's Office (NYCSO), officially the Office of the Sheriff of the City of New York, is the primary civil law enforcement agency for New York City. The Sheriff's Office is a division of the New York City Department of Fina ...

(Deputy Sheriff) * New York City Department of Citywide Administrative Services Police (Special Officers) *

New York City Department of Health and Hospitals Police The New York City Health and Hospitals Police (NYHP) is responsible for providing on-site security services at the 18 NYC hospitals and clinics operated by the New York City Health and Hospitals Corporation (HHC) and to enforce state and city law ...

(Special Officers) *

New York City Department of Homeless Services Police The New York City Department of Homeless Services (DHS) is an agency within the government of New York City that provides services to the homelessness, homeless, though its ultimate aim is to overcome homelessness. The guiding principles of the de ...

(Special Officers) *

New York City Human Resources Administration Police The Human Resources Administration or Department of Social Services (HRA/DSS) is the department of the government of New York City in charge of the majority of the city's social services programs. HRA helps New Yorkers in need through a variety o ...

(Special Officers) * New York City Parks Enforcement Patrol (Special Officers) * New York City Department of Probation (Probation Officers) * New York City Department of Sanitation Police (Special Officers) * New York City Taxi and Limousine Commission Enforcement (Special Officers) *

City University of New York Public Safety Department The City University of New York ( CUNY; , ) is the Public university, public university system of Education in New York City, New York City. It is the largest urban university system in the United States, comprising 25 campuses: eleven Upper divis ...

(Public Safety Officers) The

New York City Transit Police The New York City Transit Police Department was a law enforcement agency in New York City that existed from 1953 (with the creation of the New York City Transit Authority) to 1995, and is currently part of the NYPD. The roots of this organizat ...

and the New York City Housing Authority Police were merged into the NYPD in 1995, the Brooklyn Police Department and the Long Island City Police Department in 1898 and the Town of Morrisania Police Department in 1879. Each of the five counties of New York City — New York (Manhattan), Bronx, Richmond (Staten Island), Kings (Brooklyn) and Queens — had a county sheriff's office. In 1942 they were merged to form the New York City Sheriff's Office. In 1939, the corrections part of the each county sheriff's office separated and became the consolidated New York City Department of Correction.

Nassau County

* Nassau County Police Department * Nassau County Sheriff's Department (New York) (Deputy Sheriffs are police officers. Correction Officers are peace officers) *

Nassau County Probation Department Nassau may refer to: Places Bahamas *Nassau, Bahamas, capital city of the Bahamas, on the island of New Providence Canada *Nassau District, renamed Home District, regional division in Upper Canada from 1788 to 1792 *Nassau Street (Winnipeg), ...

(Peace Officer) * Nassau County Fire Marshals (Peace Officers) * Nassau County SPCA (Peace Officers) * Brookville Police Department. * Centre Island Police Department * East Hills Department of Public Safety (Peace Officers) *

Floral Park Police Department A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants (plants of the division Angiospermae). The biological function of a flower is to facilitate reproduction, usually by providing a mechanism ...

* Freeport Police Department * Garden City Police Department * Glen Cove Police Department * Glen Cove Harbor Patrol * Great Neck Estates Police Department * Hempstead Village Police Department *

Kensington Police Department (New York) Kensington is a district in the Royal Borough of Kensington and Chelsea in the West of Central London. The district's commercial heart is Kensington High Street, running on an east–west axis. The north-east is taken up by Kensington Gardens ...

Suffolk County

Suffolk County Police Department The Suffolk County Police Department (SCPD) provides police services to 5 of the 10 Towns in Suffolk County, New York. It is one of the largest police agencies in the United States, with approximately 2500 sworn officers. History Prior to 196 ...

* Suffolk County Sheriff's Office (Deputy Sheriffs are police officers. Correction Officers are peace officers) *

Suffolk County Probation Department Suffolk () is a ceremonial county of England in East Anglia. It borders Norfolk to the north, Cambridgeshire to the west and Essex to the south; the North Sea lies to the east. The county town is Ipswich; other important towns include Lowestof ...

(Peace Officer) * Suffolk County Fire Marshals (peace officers) * Suffolk County SPCA (peace officers) * Asharoken Police Department * Amityville Police Department * Babylon Village Code Enforcement (peace officers) * Belle Terre Village Constables (peace officers) * East Hampton Town Marine Patrol * East Hampton Town Police Department *

East Hampton Village Police Department The Village of East Hampton is a village in Suffolk County, New York. It is located in the town of East Hampton on the South Fork of eastern Long Island. The population was 1,083 at the time of the 2010 census, 251 less than in the year 200 ...

* Fisher's Island Constables (peace officers) * Head of the Harbor Police Department * Lloyd Harbor Police Department *

Long Island MacArthur Airport Long Island MacArthur Airport (formerly known as Islip Airport) is a public airport in Ronkonkoma, New York, on Long Island. The Town of Islip owns and operates the airport, which serves about two million airline passengers a year, as well as g ...

Law Enforcement (peace officers) * Nissequogue Police Department * Northport Police Department * Ocean Beach Police Department * Old Field Village Constables (peace officers) * Port Jefferson Village Constables Bureau (peace officers) * Poquott Village Constables (peace officers) * Patchogue Village Constables (peace officers) *

Quogue Police Department Quogue () is a village in the Town of Southampton in Suffolk County, on the South Fork of Long Island, in New York, United States. As of the 2010 United States Census, the population was 967, down from 1,018 at the 2000 census. Geography Accor ...

* Riverhead Town Police Department * Sag Harbor Police Department * Saltaire Police Department * Shelter Island Town Police Department * Southampton Town Bay Constables * Southampton Town Police Department *

Southampton Village Police Department Southampton is a Political subdivisions of New York State#Village, village in the Southampton, New York, Town of Southampton in Suffolk County, New York, Suffolk County, on the South Fork (Long Island), South Fork of Long Island, in New York (sta ...

Southold Town Police Department The Southold Town Police Department (STPD), commonly referred to as Southold Police, is the primary law enforcement agency within the town of Southold, New York. The Southold Police Department also operates an emergency service dispatch cente ...

Disbanded Agencies

State agencies

* Long Island Rail Road Police (merged into

Metropolitan Transportation Authority Police The Metropolitan Transportation Authority Police Department (MTAPD) is the police agency of New York's Metropolitan Transportation Authority Officers of the MTAPD are fully empowered under the New York State Public Authorities Law and are com ...

in 1997) * Long Island State Parkway Police (merged into

and New York State Park Police in 1980)

New York City agencies

ASPCA Humane Law Enforcement Division The ASPCA Humane Law Enforcement Division (colloquially, "ASPCA Law Enforcement") was the Law enforcement agency, law enforcement arm of the American Society for ...

(disbanded in 2013) *

(merged into the NYPD in 1995) * New York City Housing Authority Police (merged into the NYPD in 1995)

Nassau County Agencies

*Cove Neck Police *Laurel Hollow Police (absorbed by Nassau County PD - RMP 223) *Plandome Police (absorbed by Nassau County PD) *Woodsburgh Police (absorbed by Nassau County PD)

Suffolk County agencies

* Babylon Town Police Department (merged into

in 1960) * Babylon Village Police Department (merged into

in 1960) * Lindenhurst Police Department (merged into

in 1960) * Brookhaven Town Police Department (merged into

in 1960) * Patchogue Village Police Department (merged into

in 1960) * Islip Town Police Department (merged into

in 1960) * Brightwaters Police Department (merged into

in 1960) * Huntington Town Police Department (merged into

in 1960) * Smithtown Town Police Department (merged into

in 1960) * Suffolk County Park Rangers (merged into Suffolk County Park Police in 1991) *

Greenport Police Department Greenport may refer any of the following Netherlands * Greenport (Netherlands), a cluster of economic areas focussed around horticulture facilities and production United States * Greenport, Columbia County, New York * Greenport, Suffolk County, N ...

(merged into

in 1994) * Hampton Bays Police Department (merged into Southampton Town Police Department in 19??) * Suffolk County Park Police (merged to SCPD in 2014)

References

{{Authority control Law enforcement in New York (state) Long Island Long Island-related lists