Bahrain–Iran relations

Bilateral relations exist between the countries of Bahrain and Iran. Since the 1979 Iranian Revolution, relations between the two countries have been strained over various geopolitical issues such as the interpretations of Islam, Awakening of the Islamic world, and relations with the United States, Europe, and other Western countries. In addition, Iran has been severely critical of Bahrain for hosting the United States Fifth Fleet within the Persian Gulf at the Naval Support Activity Bahrain base.

After the Saudi diplomatic missions in Iran were ransacked by Iranian protesters following the execution of Nimr al-Nimr, Bahrain followed Saudi Arabia's decision by severing diplomatic relations with Iran on January 4, 2016. On 16 April 2019, a court in Bahrain sentenced 139 people to prison for forming terrorist groups backed by Iran. A total of 169 were arrested.