The Iran nuclear deal framework was a preliminary framework agreement reached in 2015 between the Islamic Republic of Iran and a group of world powers: the P5+1 (the permanent members of the United Nations Security Council—the United States, the United Kingdom, Russia, France, and China—plus Germany) and the European Union.

Negotiations for a framework deal over the nuclear program of Iran took place between the foreign ministers of the countries at a series of meetings held from March 26 to April 2, 2015 in Lausanne, Switzerland. On April 2 the talks came to a conclusion and a press conference was held by Federica Mogherini (High Representative of the Union for Foreign Affairs and Security Policy) and Mohammad Javad Zarif (Minister of Foreign Affairs of Iran) to announce that the eight parties had reached an agreement on a framework deal. The parties announced, "Today, we have taken a decisive step: we have reached solutions on key parameters of a Joint Comprehensive Plan of Action," which they intended to complete by June 30.[1][2][3][4] Announcing the framework, Foreign Minister Zarif stated: "No agreement has been reached so we do not have any obligation yet. Nobody has obligations now other than obligations that we already undertook under the Joint Plan of Action that we adopted in Geneva in November 2013."[5]

The framework deal was embodied in a document published by the EU's European External Action Service titled Joint Statement by EU High Representative Federica Mogherini and Iranian Foreign Minister Javad Zarif Switzerland,[1] and in a document published by the U.S. Department of State titled Parameters for a Joint Comprehensive Plan of Action Regarding the Islamic Republic of Iran's Nuclear Program.[6]

On July 14, 2015, the Joint Comprehensive Plan of Action between Iran and the P5+1 and EU, a comprehensive agreement based on the April 2015 framework, was announced.[7]