Headquarters of International Energy Agency (IEA) is in:

The International Energy Agency (IEA) is an autonomous intergovernmental organization established in the framework of the Organisation for Economic Co-operation and Development (OECD) in 1974, following the 1973 oil crisis. Its primary role is to ensure reliable, affordable, and clean energy for its member countries. The headquarters of the IEA are located in Paris, France.

• Rome is home to organizations like the Food and Agriculture Organization (FAO) and the International Fund for Agricultural Development (IFAD).
• Geneva hosts numerous international organizations, including the World Health Organization (WHO) and the World Trade Organization (WTO), but not the IEA.
• Vienna is the headquarters for organizations such as the Organization of the Petroleum Exporting Countries (OPEC) and the International Atomic Energy Agency (IAEA), but not the IEA.