Protests against the results of the highly controversial 2009 Iranian presidential election, a disputed victory by President Mahmoud Ahmadinejad, in support of opposition candidates Mir-Hossein Mousavi and Mehdi Karroubi, occurred in major cities nationwide from 2009 into early 2010. The protests were titled the Iranian Green Movement (Persian: Jonbesh-e Sabz) by its proponents, reflecting Mousavi's campaign theme, and Persian Awakening, Persian Spring or Green Revolution, reflecting the "Persian identity" of Iranians and the so-called "colour revolution" theme.Protests began the night of 12 June 2009, following the announcement that incumbent President Mahmoud Ahmadinejad won nearly 63 percent of the vote, despite several reported irregularities. However, all three opposition candidates claimed the votes were manipulated and the election was rigged, with Rezaee and Mousavi lodging official complaints. Mousavi announced he "won't surrender to this manipulation", before lodging an official appeal against the result to the Guardian Council on 14 June. Ayatollah Ali Khamenei ordered an investigation into the claims of electoral fraud and irregularities, as requested by Green Movement leaders. Ahmadinejad called the election "completely free" and the outcome a "great victory" for Iran, dismissing the protests as akin to little more than "passions after a soccer match".Due to the sporadic cases of violence present at the protests, the government had the police and paramilitary Basij violently suppress them; protesters were beaten, pepper sprayed, arrested and tortured, and even shot in some cases. The most widely known firearm victim was Neda Agha-Soltan, whose last moments were uploaded to YouTube and broadcast around the world. Opposition groups also reported thousands more were arrested and tortured in prisons around the country, with former inmates alleging mass rape of men, women and children by the Islamic Revolutionary Guards, in prisons such as Kahrizak and Evin. The Iranian government confirmed the deaths of 36 people during the protests, while unconfirmed reports by Mousavi supporters allege at least 72 deaths (over twice as many) in the three months following the election. They claimed relatives of the deceased were forced to sign documents citing death by heart attack or meningitis. Iranian authorities closed universities in Tehran, blocked websites, cutoff mobile signals and banned rallies.The creation of the Iranian Green Movement developed during these protests. It was also termed the "Twitter Revolution", due to protesters' reliance on Twitter and other social media to communicate.

Presidential elections were held in Iran on 12 June 2009, with incumbent Mahmoud Ahmadinejad running against three challengers. The next morning the Islamic Republic News Agency, Iran's news agency, announced that with two-thirds of the votes counted, Ahmadinejad had won the election with 62% of the votes cast, and that Mir-Hossein Mousavi had received 34% of the votes cast. There were large irregularities in the results and people were surprised by them, which resulted in protests of millions of Iranians, across every Iranian city and around the world and the emergence of the opposition Iranian Green Movement.Many Iranian figures directly supported the protests and declared the votes were fraudulent. Among them, many film directors like Jafar Panahi (who was consequently banned from making movies for 20 years and condemned to six years imprisonment), Mohammad Rasoulof (also condemned to 6 years imprisonment), actors and actresses like Pegah Ahangarani (who was consequently imprisoned), Ramin Parchami (who was consequently condemned to one year imprisonment), sportsmen like the whole Iran national football team who wore green wristbands in their game against South Korea to support the movement, scholars like Mostafa Tajzadeh, Mohsen Aminzadeh, Akbar Ganji, Mohsen Sazegara, many religious figures like Mohsen Kadivar, Grand Ayatollah Yousef Saanei, Grand Ayatollah Sayyid Ali Mohammad Dastgheib Shirazi, traditional singers like Mohammad Reza Shajarian, defected Basij and Iranian Revolutionary Guards like Amir Farshad Ebrahimi and those who confessed with covered faces.The European Union and several western countries expressed concern over alleged irregularities during the vote, and many analysts and journalists from the United States and United Kingdom news media voiced doubts about the authenticity of the results.Mousavi issued a statement accusing the Interior Ministry, which was responsible for conducting the election, of widespread election fraud and urged his supporters to engage in peaceful protests. He also lodged an official appeal with the Guardian Council for new and more transparent elections. Supreme Leader Ayatollah Ali Khamenei urged the nation to unite behind Ahmadinejad, labeling his victory as a "divine assessment". Khamenei then announced there would be an investigation into vote-rigging claims.On 16 June, the Guardian Council announced it would recount 10% of the votes and concluded there were no irregularities at all, dismissing all election complaints. However, Mousavi stated that a recount would not be sufficient since he claimed 14 million unused ballots were missing, giving the Interior Ministry an opportunity to manipulate the results. On 19 June, Supreme Leader Ayatollah Ali Khamenei denounced the pro-Mousavi demonstrations as illegal, and protests the next day were met with stiff resistance from government forces, with many reported deaths.The Green Movement of Iran continued its peaceful protests until 14 February 2011 and radicalized itself demanding a total regime change and departure of Khamenei from power.