Switzerland's mission to the International Atomic Energy Agency (IAEA) works to strengthen nuclear safety and security, non-proliferation and the peaceful use of nuclear technology for sustainable development worldwide.

Switzerland is a founding member of the IAEA. It is one of the twenty largest contributors to the regular budget and to the separate Technical Cooperation Fund and plays an active role in decision-making.

The Swiss Mission plays an active role in the IAEA's governing bodies, such as the General Conference, which is composed of representatives of all member states and meets every year in mid-September. On the Board of Governors, Switzerland alternates with other countries of the Western European Group in membership according to a predefined rhythm. Switzerland's next seat on the Board of Governors is scheduled for 2027.