Estimates of the total number of deaths in the Syrian Civil War, by various war monitors, range between 580,000 as of May 2021, and approximately 656,493 as of March 2025. In late September 2021, the United Nations stated it had documented the deaths of at least 350,209 "identified individuals" in the conflict between March 2011 and March 2021, but cautioned the figure was "certainly an under-count" that specified only a "minimum verifiable number".

The most violent year of the conflict was 2014, when around 110,000 people were killed. In April 2016, UN envoy to Syria Staffan de Mistura stated that more than 400,000 people were killed in the Syrian civil war. By mid-March 2025, opposition activist group the Syrian Observatory for Human Rights (SOHR) reported the number of children killed in the conflict had risen to 26,282, and that 16,181 women had also been killed.

On 28 June 2022, the United Nations Human Rights Office (OHCHR) stated that at least 306,887 civilians had been killed in Syria during the conflict between March 2011 and March 2021, representing about 1.5% of the country's pre-war population. This figure did not include indirect and non-civilian deaths. UN's Commission of Inquiry on the Syrian Arab Republic estimated that between 2011 and May 2021, more than 580,000 people were killed; with 13 million Syrians being displaced and 6.7 million refugees forced to flee Syria. Ba'athist government forces reportedly arrested and tortured numerous repatriated refugees, subjecting them to forced disappearances and extrajudicial executions.

As of February 2015, the UNHCR had designated the conflict as the "world's worst humanitarian crisis", while the head of the UNHRC's Commission of Inquiry on Syria stated that the Ba'athist government was responsible for the majority of civilian casualties up to that point. The Syrian Network for Human Rights estimated that between 2011 and 2024, the Ba'athist government and its foreign allies were responsible for approximately 91% of the total civilian casualties.

Overall deaths All of the following totals include civilians, rebels and government forces:

Source Casualties Time periodUnited Nations350,209 killed (minimum,identified only)15 March 2011 – 15 March 2021GCR2P580,000 killed (minimum)15 March 2011 – 31 May 2021Syrian Observatory for Human Rights656,493 killed (546,150 conf. by names)"The Syrian Observatory for Human Rights (SOHR) has documented by names the death of 507,567 people since the outbreak of the Syrian Revolution out of an overall death toll of 617,910 people whose death has been verified by SOHR in the past 13 years." Source:15 March 2011 – 15 March 2025

Death tolls by time periods The following figures were all compiled by the SOHR which is considered an authoritative source on the matter. The figures are only for documented deaths, while the SOHR estimates another 110,343 undocumented deaths had occurred. Time period Combatants Civilians Grand total(inc. unidentified)20113,8733,9687,841201230,25322,66352,916201360,62636,38397,009201480,00930,911110,920201561,70523,82285,527201646,19117,93564,126201726,81511,38738,202201813,3576,77620,13320197,7563,48811,24420205,2781,4846,76220212,3241,5603,88420222,1411,6273,82520232,4721,8894,36120243,17918,22321,402Total347,082199,068546,150

The following breakdown of combatant fatalities does not include 36,957 pro-government and 25,955 anti-government fighters who were killed sometime between 2011 and 2020, but whose deaths were only documented by the SOHR in 2021. Time period Pro-governmentforces Anti-governmentforces20113,138619201218,9289,746201330,26918,914201425,10632,803201517,66823,601201614,77123,431201710,77114,06420184,5228,66320192,9684,72720202,5852,69320211,0691,23820228441,29720231,52485420241,8251,273

Death tolls by provinces According to the Syrian opposition website Syrian Martyrs, the conflict's documented death toll was 151,888 up to 30 April 2016, which was the time of its last update. The number includes 35,859 rebel combatants but does not include members of the government security forces or pro-government foreign combatants who have died. Early in the conflict, the Syrian Martyrs number of civilian deaths was significantly higher than the ones presented by other organisations, including the UN; among the reasons are that they recorded deaths even when no name is given for the reportedly killed individual and that they collated reports of deaths from more sources.

Governorate Number of deaths Latakia 1,511 Rif Dimashq 34,813 Homs 17,993 Hama 9,867 Al-Hasakah 1,693 Daraa 14,227 Aleppo 31,257 Deir ez-Zor 9,696 Damascus 9,747 Tartus 555 Quneitra 1,069 Idlib 16,699 As-Suwayda 106 Raqqa 2,655 Total 151,888

Alawite deaths In May 2013, SOHR stated that at least 41,000 of those killed during the conflict were Alawites. By April 2015, reportedly a third of the country's 250,000 Alawites that were of fighting age had been killed. In April 2017, a pro-opposition source claimed 150,000 young Alawites had died.

Civilian deaths

Estimates by different organizations According to the pro-opposition Syrian Observatory for Human Rights, 199,068 civilians had been killed between March 2011 and March 2025. This number does not include an estimated 26,000 civilians killed in government prisons.

Causes Number of killed civilians Syrian government forces & allied militias 157,622 Russian forces 8,808 Explosions 5,614 Islamic State 4,935 Various attacks 3,991 Unknown circumstances 3,023 International Coalition forces 2,679 Uncertain as to Russian or Syrian Arab Air Force 2,504 Opposition factions 2,459 Field executions 2,284 Turkish forces 1,155 Prohibited weapons 1,028 Poor living conditions 994 Jihadists 927 Syrian Democratic forces 516 Others 298 Israeli forces 112 Military Operations Administration 109 Jordanian Armed Forces 9 TOTAL 199,068

According to the Violations Documentation Center in Syria, 135,501 civilians had been killed until June 2020.

Perpetrator Number of killed civilians Syrian government forces 111,016 Russian forces 6,861 Islamic State 4,969 Other 4,876 Opposition forces (incl. FSA and Islamists) 3,097 International coalition forces 2,778 Turkish forces 1,088 Syrian Democratic Forces 576 Other jihadist factions 162 TOTAL 131,750

The Syrian Network for Human Rights has stated it had documented 231,108 civilian deaths and 14 million displaced between March 2011 and August 2024.

Perpetrator Numbers ofcivilians killed Men Women ChildrenSyrian government forces 202,021 166,241 12,003 23,138Russian forces 6,969 3,931 983 2,055Islamic State 5,058 3,512 587 959Other unnamed parties 8,820 5,837 1,094 1,889Syrian National Army / Armed Opposition 4,234 2,339 886 1,009U.S.-led CJTF coalition forces 3,055 1,471 658 926Syrian Democratic Forces 1,516 1,070 177 259Hayat Tahrir al Sham 549 391 82 76Turkistan Islamic Party 4 4 0 0 Total232,195181,54016,31930,228

The Statista Research Department, utilizing an aggregate of various monitors in Syria, has said that at least 207,000 civilians had been killed in Syria by March 2023, including about 25,000 children.

Limitations of data Though there is wide consensus that the Syrian government and its allies have been responsible for a majority of civilian casualties in the Syrian conflict, many observers have raised questions about the accuracy of such numbers. Certain casualty monitors have admitted to having explicit limitations of their data due to methodology and organizational scope that are often limited by access across frontlines. Other observers have noted how inconsistent methodologies, opaque and shifting definitions of non-combatant status, as well as the lack of political independence of organizations can cause discrepancies and biased reporting.

At the start of the war, Al Jazeera journalist Nir Rosen noted that many of the deaths reported daily by activists were in fact armed insurgents falsely presented as civilian deaths, even though real civilian deaths do occur on a regular basis. Several other analysts, including Sharmine Narwani from the Lebanese Al Akhbar newspaper, Eman El-Shenawi from the Saudi Al Arabiya news website, and Adam Taylor from The Washington Post, also urged caution.

This was later confirmed in late May 2012, when Rami Abdulrahman of the Syrian Observatory for Human Rights, one of the pro-opposition monitor groups counting the number of those killed in the uprising, stated that civilians who had taken up arms during the earlier days of the conflict were being counted under the category of "civilians" as they were not army nor army defectors.

In 2018, a group of Yale and Harvard medical scholars writing for The Lancet evaluated the methodology of the Violations Documentation Center (VDC). They note that while the VDC's data collection adheres to international norms of documentation and distinction between civilian and combatants, it acknowledges limitations in its data. The authors note that the VDC claims that "information on victims in government-controlled areas can be difficult to obtain," which can lead to an underestimate of deaths in such areas.

A 2025 investigation published in the crowd-sourced website Fair Observer, authored by human rights researcher Angie Bittar and journalist Jalyssa Dugrot, criticized the Syrian Network for Human Rights for operating with financial opacity and a lack of transparency regarding its board membership and political affiliations with the former Syrian opposition and the Syrian transitional government. The investigation claims that the organization presents conflicting methodologies and inadequate definitions of civilian status that fail to adhere to international standards, raising further questions about casualty recording in the Syrian context.

Combatant deaths

Government forces Pro-government combatants FatalitiesTOTAL190,000–235,000Mid-December 2014, the SOHR estimated 35,000 Syrian Army and 14,000 pro-gov. militia fatalities remained undocumented. Subsequently, by June 2021, the SOHR managed to document 22,597 Syrian Army and 14,360 pro-gov. militia fatalities that were previously undocumented, leaving 12,403 Syrian Army fatalities still undocumented. Taking into account SOHR estimated 54,000 combatant deaths remained undocumented as of mid-March 2023, 41,597 of these could be assumed to be anti-gov. fighters.Syrian military and police105,000–120,000Pro-government Syrian militias70,000–85,000Lebanese Hezbollah2,000–3,800Russian mercenaries1573Other non-Syrian fighters12,000–15,000

The Dam Press Media Foundation, a pro-regime media outlet, created a database shortly after the start of the war that contained the names of the Syrian Army's casualties. It cataloged the names of 20,781 soldiers who died from the start of the war until at least mid-March of 2014. The site only appears to have included members of the official Syrian military and police forces, not the government affiliated militias. The website itself went offline after the fall of Damascus to the rebels and is now only partially accessible via the Internet Archive.

The non-Syrian militiamen fatalities figure includes: over 2,000 Afghans,Khamenei Praises Afghans Recruited By IRGC And Killed In Syria War at least 1,308 Iraqi Shia militiamen,2 killed (2012), 1,200 (2013–Feb. 2016), 12 killed (15 June 2016) 13 killed (Aug. 2016), 32