A large number of international organizations and other bodies have a Secretary General or Secretary-General as their chief administrative officers or in other administrative capacities.

International intergovernmental organizations

• The Andean Community (CAN) has a Secretary General .
• The Association of Caribbean States (ACS) has a Secretary-General .
• The Caribbean Community (CARICOM) has a Secretary-General .
• The Commonwealth of Nations has a Secretary-General.
• The Council of Europe (COE) has a Secretary General .
• The Council of the European Union has a Secretary-General .
• The International Criminal Police Organization (Interpol) has a Secretary General .
• The International Telecommunication Union (ITU) has a Secretary-General .
• The Inter-Parliamentary Union (IPU) has a Secretary General .
• The North Atlantic Treaty Organization (NATO) has a Secretary General .
• The Organization of American States (OAS) has a Secretary General.
• The Organization of the Islamic Conference (OIC) has a Secretary General .
• The Organisation for Economic Co-operation and Development (OECD) has a Secretary-General .
• The Pacific Islands Forum has a Secretary General.
• The United Nations (UN) has a Secretary-General.
• The Western European Union (WEU) has a Secretary-General .

International nongovernmental organizations

• Amnesty International (AI) has a Secretary General.