This is a list of historical secret police organizations. In most cases they are no longer current because the regime that ran them was overthrown or changed, or they changed their names. Few still exist under the same name as legitimate police forces.

Agencies by country

Afghanistan

Albania

Algeria

Angola

Argentina

Austria

Bangladesh

Initially formed to curb the insurgency and maintain law and order the force became involved in numerous charges of human rights abuse including political killings, shooting by death squads, and rape. It was seen as the armed wing of the ruling Awami League and it swore an oath of loyalty to Sheikh Mujibur Rahman. The Force was disbanded and merged with the Bangladesh Army following the August 15th 1975 coup which dislodged Sheikh Mujibur Rahman from power.

Bolivia

Brazil

Bulgaria

Cambodia

Cameroon

Central African Republic

Chad

Chile

China

Colombia

Congo, People's Republic of

Croatia, Independent State of

Cuba

Czechoslovakia

Dominican Republic

Egypt

Finland

Germany

Greece

Guatemala

Haiti

Honduras

Hong Kong

Hungary

Indonesia

Iran

Iraq

Ireland

Italy

Japan

Mexico

Mongolia

Mozambique

Nicaragua

Nigeria

Ottoman Empire

Paraguay

Peru

Philippines

Poland

Portugal

Republic of China (Taiwan)

Roman Empire

Romania

Russian monarchy

Rwanda

El Salvador

Singapore

Somalia

South Africa

Soviet Union

Spain

Uganda

United States of America

Uruguay

Venezuela

South Vietnam

Yugoslavia

Zaire