Belarus–Iran relations are foreign relations between Belarus and Iran. Both countries established diplomatic relations in 1992. Belarus has an embassy in Tehran. Iran has an embassy in Minsk. The two countries have enjoyed good relations in recent years reflected in regular high level meetings and various agreements. In 2008, Belarusian Foreign Minister Sergei Martynov described Iran as an important partner of his country in the region and the world.
In July 2004, an Iran-Belarus joint economic commission meeting was held and an agreement was signed on bolstering mutual economic cooperation.
In April 2006, the two countries signed a number of economic and trade agreements.
In May 2007, the two countries signed cooperation accords, following a meeting of Belarusian President Lukashenko and Iranian President Mahmoud Ahmadinejad. They signed a joint communique on the results of the visit to Belarus by the President Ahmadinejad  President Lukashenko said that Belarus and Iran have removed all the impediments to the bilateral trade. President Ahmadinejad said "from now on Belarusian-Iranian relations will develop to ensure stability and security in the world." 
In 2008, Belarus-Iran trade made $93.8 million (23.6% up), with Belarus’ export as high as $83.7 million (25.8% up), import — $10.2 million (8.3% up). The foreign trade surplus totaled $73.5 million. Belarus’ main exports are potash fertilizers, synthetic fibers, synthetic fiber cords, while the main imports are cars, grape, spare parts for automobiles and tractors.
In 2008, Iranian investments in Belarus amounted to $13.1 million, including $9.9 million in direct investments. In 2010, Iran inaugurated a large copper wire factory and the second phase of Samand car assembly line in Beluarus.
Belarus and Iran claim that they can raise the mutual trade turnover up to $1 billion, said Iranian Commerce Minister Masoud Mir-Kazemi as he met with Prime Minister of Belarus Sergei Sidorsky. Currently the two countries' trade value stands at $3.250 billion.
It has been reported that Belarus has exported tanks, armored personnel carriers, and heavy artillery to Iran.
In May 2007, Iran granted Belarus greater access to oil reserves following a meeting of the two presidents. what Belarusian President Lukashenko called a "strategic partnership." Iran gave Belarus long-discussed access to the Jofeir oil field, which is near the Iraq border and could produce up to 30,000 barrels a day once operational. Lukashenko said the crude from Jofeir would either be refined in Iran or simply extracted by Belarus and sold on world markets. It would be the first energy project abroad for Belarus.  He also said "Iran is ready to help Belarus diversify its energy supplies" 
In May 2009, Belarus Deputy Prime Minister Vladimir Semashko met Vice Governor of the Central Bank of the Islamic Republic of Iran Reza Raei. Following this meeting, the Central Bank of Iran announced it will lend $212m to Belarus' state-run firm Belarusneft for the development of the Jofeir oil field 
- Iran, Belarus Sign Cooperation Agreements Radio Free Europe - 7 November 2006
- Belarus, Iran sign cooperation accords May 21, 2007
- Alexander Lukashenko: Belarus, Iran removed all impediments to trade National Legal Internet Portal of Republic of Belarus - 22 May 2007
- Belarus plans to enhance joint project on oil production in Jofeir field The National State Teleradiocompany of the Republic of Belarus 12 June 2009
- Iranian central bank helps fund Belarusneft oil exploration Middle East Business Intelligence 21 May 2009
- Belarussian embassy in Tehran (in Russian, English and Persian)
- Belarussian Ministry of Foreign Affairs: direction of the Belarussian embassy in Tehran
- Iranian embassy in Minsk