Official figures in Iran show Mahmoud Ahmadinejad has been re-elected as president, with 63% of the vote. But reformist Mir Hossein Mousavi also claimed victory. Here are some reactions.
From inside Iran:
MIR HOSSEIN MOUSAVI, REFORMIST CANDIDATE
I'm warning I will not surrender to this dangerous charade. The result... will jeopardise the pillars of the Islamic Republic and will establish tyranny.
MEHDI KARROUBI, REFORMIST CANDIDATE
Evidently the results and the institution coming out of such a vote count is illegitimate and unacceptable.
MOHSEN REZAI, CONSERVATIVE CANDIDATE
It is obvious that the person who has been declared president following the legal procedures is the president of all Iranian people. I will support him in a bid to prevent any delays in the provision of services to the people.
AYATOLLAH ALI KHAMENEI, SUPREME LEADER
The chosen and respected president is the president of all the Iranian nation and everyone, including yesterday's competitors, must unanimously support and help him.
From the region:
HAMID KARZAI, AFGHAN PRESIDENT
The selection of Dr Ahmadinejad with a definitive majority of the Iranian people's vote is a suitable selection for the continuous progress and welfare of the Iranian nation.
AVIGDOR LIEBERMAN, ISRAELI FOREIGN MINISTER
Given the continued Iranian policies, and particularly following the victory and continued rule of Ahmadinejad, the international community must continue to act in an uncompromising manner to stop Iran from going nuclear, stop its support for terror organisations and its undermining of Middle East stability.
AMR MOUSSA, ARAB LEAGUE SECRETARY-GENERAL
We hope that the next term will witness progress on the relations between Iran and the Arab world and co-operation in establishing peace in the Middle East.
BASHAR AL-ASSAD, SYRIAN PRESIDENT
Expressed "his faith that relations and co-operation will be reinforced between Syria and Iran."
ALI AL-DABBAGH, IRAQI GOVERNMENT SPOKESMAN
Iraq will deal with any choice that is decided by the Iranian people. Iraq hopes to maintain friendly relations with Iran.
FAWZI SALLOUKH, LEBANESE FOREIGN MINISTER
We hope that the success of President Ahmadinejad in Iran will be in the service of peace and calmness in the Middle East.
FAWZI BARHUM, HAMAS SPOKESMAN
The results of the Iranian election are a victory for Iranian democracy, the Iranian people, the leaders and all parties and factions that participated.
From the wider world:
HILLARY CLINTON, US SECRETARY OF STATE
We are monitoring the situation as it unfolds in Iran. But we, like the rest of the world, are waiting and watching to see what the Iranian people decide. We obviously hope that the outcome reflects the genuine will and desire of the Iranian people.
The presidency is concerned about alleged irregularities during the election process and post-election violence that broke out immediately after the release of the official election results on 13 June 2009.
The presidency hopes that the outcome of the presidential elections will bring the opportunity to resume dialogue on the nuclear issue and clear up the Iranian position in this regard.
FRENCH FOREIGN MINISTRY
We have noted the results of the presidential elections in Iran as announced by the Iranian authorities, which returned Mr Ahmadinejad for a second term as head of the Iranian government, and that they are contested by two of the candidates. We are continuing to follow the situation closely.
LAWRENCE CANNON, CANADIAN FOREIGN MINISTER
Canada is deeply, deeply concerned by reports about voting irregularities in the Iranian election. We're troubled by reports of intimidation of opposition candidates' offices by security forces.
FRANK-WALTER STEINMEIER, GERMAN FOREIGN MINISTER
The violent actions of the security forces against demonstrators is not acceptable, nor is preventing peaceful protest. We will continue to monitor the situation on the ground very carefully.