Reactions to the Gaza flotilla raid on 31 May 2010 ranged from fierce condemnation to strong support for Israel.

Israel expressed regret over loss of life in the Gaza flotilla raid, yet stated that the operation was a "clear case of self defense". Prime Minister Benjamin Netanyahu apologised for the incident in March 2013, which he said was necessitated by the Syrian civil war. The incident also drew attention to the blockade of the Gaza Strip, which was condemned. Secretary-General of the United Nations Ban Ki-moon called for a full investigation and urged Israel to provide a full explanation. Many countries called for an international investigation and civilian protests erupted around the world. Four countries downgraded their diplomatic relations with Israel and/or withdrew ambassadors: Ecuador, Nicaragua, South Africa, and Turkey. Twelve Latin American countries condemned Israeli actions: Argentina,"Argentina condemns Israeli attack to Gaza humanitarian flotilla" , Télam Bolivia,"Bolivia cuts ties with Israel, seeks genocide charges against Israeli officials", Haaretz Brazil, Chile, Cuba, Ecuador, Mexico, Nicaragua, Paraguay, Peru, Uruguay and Venezuela. Israel had developed significant bilateral relationships with seven of them. Twenty-three European countries condemned or protested Israeli actions: Albania, Azerbaijan, Belarus, Bosnia and Herzegovina, Bulgaria, Croatia, the Czech Republic, Estonia, Finland, France, Greece, Iceland, Ireland, Italy, Luxembourg, Norway, Portugal, Romania, Russia, Serbia, Spain, Sweden and the United Kingdom. Israel was widely condemned in the Arab world. Thirteen non-Arab Asian countries condemned Israeli actions: Brunei, China, India, Indonesia, Iran, Japan, Malaysia, Maldives, North Korea, Pakistan, Sri Lanka, Turkey and Uzbekistan. Israel was also condemned by: Australia, Kenya, New Zealand and South Africa. Eighteen countries expressed regret over the loss of life: Israel, Argentina, Azerbaijan, Bangladesh, Canada, Czech Republic, Croatia, Egypt, Estonia, Greece, Holy See, India, Ireland, Japan, Sri Lanka, the United Kingdom, the United States and Uruguay. Unofficial responses included civilian protests against Israeli action following reports of the deaths aboard the MV Mavi Marmara.

The Turkish government and the İHH were also criticised. Several journalists accused Turkey of aligning itself with Iran, Syria, Hamas and Hezbollah, and expressed concern over the contribution of Recep Tayyip Erdoğan and his government to fueling public rage. Pro-Israeli rallies took place in Los Angeles, Miami, Vienna, Great Britain, Brussels and Israel."Hundreds in Miami rally in support of Israel". Miami Herald

Supranational organizations

The Secretary-General of the United Nations, Ban Ki-moon condemned the violence, called for "a full investigation to determine exactly how this bloodshed took place" and urged Israel to "provide a full explanation [into the matter]". He also said that the underlying problem behind the raid was the siege of Gaza, which he described as "counter-productive, unsustainable and wrong". On 2 August he announced that a U.N. panel was to investigate (see ).

United Nations High Commissioner for Human Rights Navanethem Pillay said "I am also registering my shock at reports that humanitarian aid was met with violence early this morning, reportedly causing death and injury as the convoy approached the Gaza coast." The UN Special Coordinator for the Middle East Peace Process, Robert Serry, and the director of the United Nations Relief and Works Agency for Palestine Refugees in the Near East, Filippo Grandi declared "these tragedies are completely inevitable if Israel does not listen to the callings of the international community to end the unacceptable and counter-productive blockade of Gaza.""La ONU condena el asalto israelí a la flota humanitaria en Gaza", El Mercurio. The Relief and Works Agency also said "we are shocked by reports of killings and injuries of people on board boats carrying supplies for Gaza, apparently in international waters. Such tragedies are entirely avoidable if Israel heeds the repeated calls of the international community to end its counterproductive and unacceptable blockade of Gaza.

Others African Union (See below).

(See below).

Association of Southeast Asian Nations condemned the Israeli attack, called on Israel to lift its blockade of Gaza, expressed solidarity with Turkey, and urged the UN to conduct an investigation."ASEAN, Gulf ministers condemn Israeli raid on flotilla" , Channel NewsAsia, 1 June 2010.

(See below).

held an emergency meeting on 1 June 2010 in response to the attack. Turkey is a NATO signatory, and Article 5 of the NATO charter states that armed attacks against one or more NATO members in Europe or North America will be considered an attack against all of them, and each will take action (including the possibility of armed force) "to restore and maintain the security of the North Atlantic area". Article 6 explicitly mentions the Mediterranean Sea as a location for where attacks will trigger responses. The result of the meeting was that the NATO Secretary General issued a statement expressing "deep regret" over the loss of lives and "As a matter of urgency, [he] also request[ed] the immediate release of the detained civilians and ships held by Israel."

(See below).

Secretary General Ekmeleddin İhsanoğlu condemned Israel for the attack on the people on the ship."OIC Secretary General: Israeli Aggression on the Relief Convoy Heading for Gaza is a Crime and Blatant Violation of All International Laws Norms and Standards"

The Southeast European Cooperation Process, at a meeting of the 13 member countries in June 2010, condemned Israel's raid and demanded an impartial, independent and internationally credible investigation.

International Committee of the Red Cross said that Israel's blockade violated the Geneva Conventions and stated that it constituted a collective punishment imposed in clear violation of Israel's obligations under international humanitarian law.OHCHR: Gaza closure: not another year! ICRC 14 June 2010 News release 10/103

National reactions

Non-governmental organizations

International human rights and advocacy organizations Amnesty International accused Israel of using excessive force, and claimed that the level of lethal force used was out of proportion to any threat that could have been posed by the activists. Amnesty International called on Israel to make public the rules of engagement used by the commandos, and to launch an "immediate, credible and independent investigation". Amnesty International also called for an international inquiry, and called on Israel to invite UN experts to examine the incident. The Foreign Press Association, which represents hundreds of journalists in Israel and the Palestinian territories, has complained the Israeli military seized video and equipment from dozens of reporters on board the main ship. The FPA says the military is now selectively using footage to bolster its claims that commandos opened fire only after being attacked. FPA also criticized Israel's use of captured material without permission. Human Rights Watch called for a "full, impartial investigation" into the incident, and for the international community to make sure that any inquiries meet basic international standards, and that any wrongdoers were brought to justice. Human Rights Watch also called on Israel to grant all detained and injured flotilla members immediate access to legal counsel and their families, and to disclose the identities of all those injured and killed. Reporters Without Borders called for the release of the names of all journalists held after the raid. They said there were at least 15 foreign journalists in the convoy. A statement said "We deplore this assault, which left a heavy toll of dead and wounded. The journalists who were on the flotilla to cover the humanitarian operation were put in harm's way by this disproportionate reaction. We urge the Israeli authorities to release the detained journalists and allow them unrestricted access to the Gaza Strip. The international community needs accurate information about this Palestinian Territory. Stop the War Coalition issued a statement saying "The action should see Israel condemned under international law. Israel has repeatedly flouted law and public opinion worldwide in its treatment of the Palestinians. The decision by Israel to attack the flotilla with such loss of human life shows it is arrogant and deadly intent in opposing any aid to the Palestinians." The President of the Algerian MSP Bouguerra Soltani, whose wife is part of the delegation, announced the dispatch of a parliamentary delegation to Turkey to try to get information about the 32 Algerians aboard the convoy."Flotilla to Ghaza: Arab anger against Israel" , Ennahar Online, 1 June 2010 In an interview with Al-Aqsa TV, Imam Ahmad Ibrahimi, the Coordinator of Algerian Delegation to Flotilla, stated (as translated by MEMRI), "we felt no fear whatsoever of those brothers of apes and pigs. By Allah, I loathed them before, and my hatred of them has only grown, not because they punished and humiliated us, but because I had thought them to be worthy enemies, but it turns out that they are too despicable even to be called our enemies, because they are not our equals. They are cowards ... Our hatred for these people is so intense that we wished, at those moments, that we could have been bombs, and blow up among those brothers of apes and pigs.""MEMRI Flotilla Coverage: Imam Ahmad Ibrahimi, Coordinator of Algerian Delegation to 'Freedom Flotilla': Our Hatred of Them Is So Intense That We Wished We Could Have Been Bombs and Blown Ourselves Up among the Brothers of Apes and Pigs", Middle East Media Research Institute, Clip 2504, 4 June 2010.

Israeli and Jewish organizations The Australian Jewish Democratic Society said, "Unless the Israeli government can convincingly back up its claims that the Gaza aid convoy was not a project for delivering humanitarian aid to Gaza, but in reality a front for violent action, it invites the condemnation of everyone who supports negotiated conflict resolution and reinforces the view that Israel's professed support for human rights is a sham."

B'Tselem demanded that an independent and effective investigation conducted by non-military officials be launched immediately. B'Tselem stated that among the issues that needed investigating are whether proportionate force was used, whether the soldiers were trained and equipped to cope with this type of event, what open-fire regulations were given to soldiers, and whether alternative options were considered.

Jews for Justice for Palestinians said, "Jews For Justice For Palestinians (the largest alternative voice of Jews in the UK or Europe) utterly condemns Israel's aggressive military interception of the peaceful Free Gaza aid flotilla. We hold Israel responsible for the tragic deaths and injuries which this action caused.""JfJfP statement on the flotilla interception" Jews for Justice for Palestinians. Retrieved 19 June 2010.

German Jewish group Jewish Voices for a Just Peace decided to send a boat with school supplies and humanitarian aid to break the Gaza blockade. Kate Katzenstein-Leiterer, a leader of the group, said instead that they wanted to help preserve the State of Israel by showing that its current policies were wrong. Due to excessive interest, the group subsequently decided to arrange a second vessel.