Afghanistan

• Istikhbarat (-1978)
• Da Afghanistan da Gato da Saatane Adara (AGSA) (1978-1979)
• Komite-ye Amniyat-e Melli (KAM) (1979-1979)
• Khedamat-e Etelea'at-e Dawlati (KhAD) (1980–1987)
• Wazarat-e Amaniat-e Dowlati (WAD) (1987–1992)
• National Directorate of Security (NDS) (2002–2021)

Albania

• Drejtorija e Sigurimit të Shtetit (Sigurimi) (Directorate of State Security) (1944–1991)

Algeria

• Direction des Services de Sécurité (1990–2016)

Argentina

• Batallón de Inteligencia 601 (601 Intelligence Battalion) (late 1970s–2000)
• Central Nacional de Inteligencia (CNI) (National Intelligence Center)
• Coordinación de Informaciones de Estado (CIDE) (State Information Coordination)
• División de Informaciones (Information Division)
• Secretaría de Informaciones de Estado (SIDE) (Secretariat of State Information)

Austro-Hungarian Empire

• Evidenzbureau (1850–1918)

Brazil

• Serviço Nacional de Informações (SNI) (National Information Service) (1964–1990)
• Subsecretaria de Inteligência (SSI) (Sub-Secretariat of Intelligence) (1990–1995)

Bulgaria

• Durzhavna Sigurnost (DS)

Canada

• RCMP Security Service (1950–1984)

Chile

• Dirección de Inteligencia Nacional (DINA) (National Directorate of Intelligence) (1973–1977)
• Central Nacional de Inteligencia (CNI) (National Intelligence Center)

China / Taiwan

• Embroidered Uniform Guard (1368–1645)
• Eastern Depot (1420–1644)
• Bureau of Investigation and Statistics (1927–1946)
• National Committee of Investigations and Statistics (1935–1949)
• Taiwan Garrison Command

Colombia

• Departamento Administrativo de Seguridad (DAS) (Administrative Department of Security) (1960–2011)

Czechoslovakia

• Federal Directorate of Intelligence Services (FSZS)
• Hlavni Sprava Rozvedky (HSR)
• Státní Bezpečnost (StB)

Dutch East Indies

• Politieke Inlichtingendienst (PID) (1916–1945)

Finland

• Ministry of Interior
  • Etsivä keskuspoliisi (EK, 1919–1938)
  • Valtiollinen poliisi (Valpo I, 1939–1944)
  • Red Valpo (Valpo II, 1944–1948)
• Finnish Defence Forces
  • Intelligence Research Establishment (VKoeL, 1960–2014) – Viestikoelaitos / Signalprovanstalten
• Ministry of Defence
  • Military Intelligence Service (PVTK, 2007–2014) – Pääesikunnan tiedusteluosasto

France

• Deuxième Bureau (1871–1940)
• Renseignements Généraux (RG) (1937–2008)
• Service de Documentation Extérieure et de Contre-Espionnage (SDECE) (1944–1982)
• Direction de la Surveillance du Territoire (DST) (1944–2008)

Federal Republic of Germany

• Gehlen Organization ("The Org", "Zipper") (1946–1956)
• Office/Center for Intelligence of the Federal Armed Forces (ANBw/ZNBw)

German Democratic Republic (East Germany)

• Ministerium für Staatssicherheit (MfS or Stasi) (Ministry for State Security) (1950–1990)
  • Main Directorate for Reconnaissance (HVA) (1955–1990)
• Military Reconnaissance of the National People's Army (Militärische Aufklärung der Nationalen Volksarmee) (1956–1990)

Nazi Germany (Third Reich)

• Abwehr (1920–1945)
• Abteilung Fremde Heere Ost (Department Foreign Armies East)
• Geheime Staatspolizei (Gestapo) (Secret State Police) (1933–1945)
• Geheime Feldpolizei (GFP) (Secret Field Police) (1939–1945)
• Sicherheitsdienst (SD) (Security Service) (1931–1945)
• B-Dienst (Observation Service) (1918–1945)
• Naval Intelligence Service, also called Nachrichten-Abteilung (1899–1919)
• Abteilung III b (Department III b) (1889–1918)
• Prussian Secret Police (1851–1933)

Ecuador

• National Intelligence Secretariat (SENAIN)

Egypt

• State Security Investigations Service (SSIS) (1913–2011)

Hong Kong

• Special Branch (1930–1995)

Hungary

• Államvedélmi Osztály (ÁVO) (State Protection Department)
• Államvédelmi Hatóság (ÁVH) (State Protection Authority) (1945–1956)

Israel

• ha-Lishka le-Kishrei Mada (Lekem or Lakam) (Bureau of Scientific Relations) (1957–1986)

Italy

• Organizzazione per la Vigilanza e la Repressione dell'Antifascismo (OVRA) (1927–1945)

Indonesia

• Komando Pemulihan Keamanan dan Ketertiban (Kopkamtib) (1965–1988)
• Badan Koordinasi Stabilitas Nasional (Bakorstanas) (1988–2000)

Iran

• Sazeman-i Ettelaat va Amniyat-i Keshvar (SAVAK) (National Organization for Intelligence and Security) (1957–1979)

Iraq

• Al-Amn al-‘Amm (Directorate of General Security) (1922–2003)
• Al-Amn al-Khas (Special Security Organization) (1983–2003)
• Al-Istikhabarat al-'Askariyya (Directorate of General Military Intelligence) (1932–2003)
• Jihaz Al-Mukhabarat Al-A'ma (Iraqi Intelligence Service) (1973–2003)

Ireland

• Free State Army Intelligence Department ("Oriel House") (1921–1923)
• Criminal Investigation Department (CID) (1921–1923)
• Citizens' Defence Force

Japan

• Kempeitai (1881–1945)
• Tokeitai
• Tokkō (1911–1945)

Libya

• Jamahiriya el-Mukhabarat

Malaysia

• Malayan Security Service (1939–1948)

Manchukuo

• Hoankyoku (1937–1945)

Netherlands

• Binnenlandse Veiligheidsdienst (BVD) (Interior Security Service) (1947–2002)
• Inlichtingendienst Buitenland (IDB) (Foreign Intelligence Service) (1946–1994)
• Netherlands East Indies Forces Intelligence Service (NEFIS) (1942–1945)
• Netherlands Indies Government Information Service (NIGIS) (1942–1945)

Ottoman Empire

• Teşkîlât-ı Mahsûsa (1913–1918)

Panama

• Policia Secreta Nacional (PSN) (La Secreta) (1909–60s first government secret agency)
• Guardia Silenciosa Panameñista (GUSIPA) (1930–40s short-lived secret service)
• 1.Estado Mayor Personal/Sec."E" Asuntos de Seguridad Nacional of PFD General Command
• Sub Jefatura de Inspectoria General of PFD General State Major Chieftain
• Comando General de la Comision de Defensa y Seguridad (COGECODESE) (security, defense and intelligence PNG/PFD main entity)
• Estado Mayor General ('Inteligencia') (G-2) (1950–80s PNG/PDFs military intelligence)
• Departamento Nacional de Investigaciones (DENI) (1960–1989)

Philippines

• Philippine Constabulary – Office of Special Investigations (PC-OSI) (1901–1991)^[1]
• Philippine Constabulary – National Constabulary Investigations Service (PC-NCIS) (1901–1936)^[2]
• National Intelligence and Security Authority (NISA) (1972–1987)^[3]
• Civil Intelligence and Security Agency (CISA) (1972–1987)^[4]

Poland

• Oddział II Sztabu Generalnego Wojska Polskiego (1918–1939)
  • Biuro Szyfrów (Cypher Bureau)
  • Estezet (STZ)
  • Polish Agency of Trade Information (PAIH)
• Ministerstwo Bezpieczeństwa Publicznego (1945–1954)
• Komitet do spraw Bezpieczeństwa Publicznego (1954–1956)
• Ministerstwo Spraw Wewnętrznych (MSW) (1954–1990)
  • Departament I MSW
  • Departament II MSW
  • Służba Bezpieczeństwa MSW (SB-MSW) (1956–1990)
• Urząd Ochrony Państwa (UOP) (Office for State Protection) (1990–2001)
• Główny Zarząd Informacji Wojska Polskiego (1944–1957)
• Wojskowa Służba Wewnętrzna (WSW) (1957–1990)
• Oddział II Sztabu Generalnego LWP (1945–1951)
• Zarząd II Sztabu Generalnego Wojska Polskiego (1951–1990)

Portugal

• PIDE (1933–1969)

Federation of Rhodesia and Nyasaland

• Federal Intelligence and Security Bureau

Roman Empire

• Agentes in rebus (4th–7th century)
• Areani
• Bureau of Barbarians
• Frumentarii
• Praetorian Guard (27 BC–312 AD)

Romania

• Secția a-II-a (Section II) (1859–1908)
• Siguranța Statului (Siguranța) (State Security) (1908–1940)
• Serviciul Special de Informații (Special Intelligence Service) (1940–1944)
• Serviciul de Informații (Intelligence Service) (1944–1948)
• Departamentul Securității Statului (Securitate) (Department of State Security) (1948–1991)

Russia

• Okhrannoye otdeleniye (Okhrana or slang Okhranka) (Security Section) (1866–1917)
• Special Corps of Gendarmes (1836–1917)
• KGB
• NKVD (1934–1946)

Serbia

• Service for Research and Documentation (SID) (Ministry of Foreign Affairs) (1949–2007)

Sri Lanka

• Special Branch (1966–1970)

Singapore

• Special Branch

Somalia

• National Security Service (NSS) (1970–1990)

South Africa

• Bureau of State Security (BOSS) (1969–1980)

Soviet Union

• Cheka (1917–1922) (All-Russian Extraordinary Commission)
• Gosudarstvennoye Politicheskoye Upravleniye (GPU) (1922–1923) (State Political Directorate)
• Obyedinennoye Gosudarstvennoye Politicheskoye Upravleniye (OGPU) (1923–1934) (Joint State Political Directorate)
• Narodnyi Kommissariat Vnutrennih Del (NKVD) (1934–1946) (People's Commissariat for Internal Affairs)
• Ministerstvo Vnutrennih Del (MVD) (1946–1954) (Ministry for Internal Affairs)
• Ministerstvo Gosudarstvennoi Bezopastnosti (MGB) (1943–1953) (Ministry for State Security)
• Komitet Gosudarstvennoi Bezopasnosti (KGB) (1954–1991) (Committee for State Security)

Spain

• Centro Superior de Información de la Defensa (CESID) (Main Defence Information Centre) (1977–2002)
• Political-Social Brigade (BPS/BSI) (1941–1978)

Sweden

• IB ("Informationsbyrån")

Turkey

• Millî Emniyet Hizmeti Riyâseti (M.E.H./MAH, between 1926 and 1965)

Uganda

• State Research Bureau

Ukraine

• Kontrrazvedka

United Kingdom

See also: MI5 aka The Security Service and MI6 aka The Secret Intelligence Service (SIS), that still do exist; MI13 did though never exist.

United States

• Air Force Intelligence, Surveillance and Reconnaissance Agency (1948–2014)
• Office of Strategic Services (OSS) (1942–1945)
• The Pond (1942–1955)
• National Drug Intelligence Center (1993-2012)

North Vietnam

• Central Research Agency

South Vietnam

• Central Intelligence Office (1961–1975)
• Military Security Directorate
• Strategic Technical Directorate
• Research and Documentation Office
• Intelligence Directorate

Vietnam

• • Tổng cục An ninh (Tổng cục I) (General Department of Security or First General Department)
  • Tổng cục Tình báo Công an (Tổng cục V, or TC V) (General Department of Public Security Intelligence or Fifth General Department)

Yugoslavia

• UDBA (1946–1991)
• KOS (Kontraobaveštajna služba), Counterintelligence Service (General staff) (1946–1992)