The Federal Department of Foreign Affairs, so named since 1979, is one of the seven Departments of the Swiss government federal administration of Switzerland, and corresponds in its range of tasks to the ministry of foreign affairs in other countries. The department is always headed by one of the members of the Swiss Federal Council. Since 1 November 2017, the department is headed by Federal Councillor Ignazio Cassis.

In many countries, the ministry of foreign affairs is the highest government department exclusively or primarily responsible for the state's foreign policy and relations, diplomacy, bilateral, and multilateral relations affairs as well as for providing support for a country's citizens who are abroad. The entity is usually headed by a foreign minister or minister of foreign affairs. The foreign minister typically reports to the head of government.