January 28 - The insurgent continues with several dozen Iraqi deaths. Seven U.S. soldiers killed, three in a helicopter crash.
January 29 - About 17 people died from car bombs on the eve of the elections. A rocket hit the U.S. Embassy compound inside Baghdad's fortified Green Zone, killing two people and wounding at least four. According to the embassy spokesman, all of them are Americans.
January 30 - Iraq's interim president Ghazi Yawer was one of the first people to vote in the Iraqi National Assembly election. Up to 15 British military personnel were killed in Iraq when an air force transport plane crashed northwest of Baghdad. Meanwhile, at least 35 people die in attacks at polling places.
January 31 - Nine RAF personnel and one soldier are KIA after a British Hercules plane comes down 25 miles (40 km) north-west of Baghdad.
February 19 - At least 40 people are killed and more than 100 wounded in attacks by suicide bombers in Baghdad and other parts of Iraq during festival of Ashoura.
February 22 - Two policemen and two civilians are killed and another 30 police are injured in a suicide attack against a convoy of security forces in Baghdad.
February 24 - A car bombing attack in the Iraqi city of Tikrit reportedly kills up to 15 people. Another 25 are injured in an attack on a police station.
February 25 - Three US troops are killed and eight others injured in a bomb explosion in Tarmiyah just north of Baghdad.
February 27 - Five people are killed in a bomb blast in Hammam Alil. In another incident, a US soldier is shot and killed in Baghdad while manning a traffic checkpoint.
February 28 - 127 Iraqis are killed by a suicide car bomb outside a medical center in Hilla, south of Baghdad. The bomber, who later turned out to be a U.S. educated Jordanian lawyer from al Qaeda targeted a large crowd of mainly teachers and police recruits outside a health clinic. It was the deadliest single blast in Iraq's history.
March 2 - Judge Barwez Mohammed Mahmoud al-Merwani and his son Aryan Barwez al-Merwani are murdered in the Azamyiah district. Also 10 people are killed in attacks on an Iraqi army base and a checkpoint in Baghdad.
March 3 - Two car bombs exploded near Iraq's Interior Ministry killing at least five policemen. In total 17 people are killed in various incidents.
March 7–33 people are killed and dozens wounded as Iraqi insurgents attack in Baqouba and Baghdad.
March 9 - A suicide car bomb attack reportedly carried out by a group linked to al-Qaeda kills three and injures more than 20 people in Baghdad.
March 10 - At least 47 people are killed by a suicide bomber who blows himself up at a Shia funeral service in the northern city of Mosul.
March 20 - A gun battle between Iraqi insurgents and US troops near Baghdad leaves 24 rebels dead. Earlier, a suicide bomber kills the head of the police anti-corruption department in the northern city of Mosul. Insurgents then attack his funeral, killing at least two other people.
As Coalition Forces arrive at a car bombing in South Baghdad, a second car bomb is detonated, targeting those responding to the initial incident. 14 April 2005
April 2 - The Battle of Abu Ghraib was an attack on US forces at Abu Ghraib prison, which consisted of heavy mortar and rocket fire, under which armed insurgents attacked with grenades, small arms, and two vehicle-borne improvised explosive devices (VBIED). 
April 6 -Jalal Talabani is elected President of Iraq by the Iraqi National Assembly, becoming the first President elected under the country's new Constitution.
April 9 - Tens of thousands of demonstrators loyal to Shiite cleric Muqtada Sadr march through Baghdad denouncing the US occupation of Iraq, two years after the fall of Saddam Hussein. Also insurgents kill 15 Iraqi soldiers traveling in a convoy south of Baghdad.
April 14 - Two car bombs kill 18 in Baghdad neighborhood.
April 15 - At least four people are killed in bombings in the Iraqi city of Samarra and in the capital Baghdad.
April 16 - Three American soldiers are killed when a Marine base comes under indirect fire near Ramadi, west of Baghdad.
April 17 - A roadside bomb near the central city of Samarra kills two Iraqi soldiers. Also other bombs kill an American soldier and two civilians.
April 18 -
Iraqi security forces numbering in the hundreds launch an operation to "root out" Sunni insurgents at the tip of Iraq's "Triangle of Death".
In Baghdad, gunmen ambush a senior Defence Ministry adviser, Major General Adnan al-Qaraghulli, killing him and his son. 
April 19 - Two American soldiers are killed and four wounded in a car bombing. Another suicide car bomb outside an Iraqi army recruitment center and other attacks in the country kills a dozen people and wounds more than 50.
April 20 -
Iraq's prime minister Iyad Allawi escapes an assassination attempt when a suicide bomber in a car attacks his convoy near his home. The attack kills two policeman and wounds four.
60 bodies are fished out of the Tigris river south of Baghdad; the bodies appear to not be from a single region or date . Also insurgents execute 19 Iraqi soldiers in a football stadium in Haditha.
April 21 -
A commercial helicopter is shot down about 20 km (12 mi) north of the Iraqi capital Baghdad, killing all 11 people on board. One survivor is shot by insurgents who rush to the site.
Two foreign contractors are killed in a roadside bomb on the road to Baghdad airport.
April 22 - A car bomb explodes outside a Shiite mosque in Baghdad, killing at least nine people and wounding more than 20.
April 23 - At least 19 people including nine Iraqi and four US soldiers were killed when US and Iraqi convoys were attacked by insurgents near Baghdad.
April 24 - At least 22 people are killed and 57 more were wounded in twin bombings in a market near the Ahl al-Beit mosque in Shula, north of Baghdad.
April 29 - At least 29 people are killed and more than 100 injured in a wave of car bomb attacks targeting Iraqi security forces in and around Baghdad.
April 30 - Insurgents launch attacks in Baghdad and northern Iraq killing at least 11 Iraqis and wounding more than 40.
A large weapons cache New Ubaydi is destroyed, May 2005
May 1 - A suicide attack targets a Kurdish funeral in the northern town of Talafar, near Mosul leaves at least 25 people dead and injures more than 30 others. Earlier, at least five policemen and four civilians are killed in two separate attacks in Baghdad.
May 2 - Nine people die in a blast in a busy shopping area of Baghdad. At least three people are killed in an explosion in the east of the capital and four more died in two blasts in the northern city of Mosul.
May 3 - Clashes in the Iraqi city of Ramadi have left 12 insurgents, two Iraqi civilians and one Iraqi soldier dead.
May 4 - At least 60 people have been killed and dozens wounded in a suicide bombing at the offices of a Kurdish party in Irbil, northern Iraq.
May 5 - At least 24 people die in wave of attacks in Baghdad.
May 6 - A suicide car bomber strikes a vegetable market in Suwayra, killing at least 58 people and wounding 44. 9 more Iraqi die in another attack.
May 7 - Two suicide car bombs explode in a central Baghdad square killing 22 people.
May 11 - At least 71 people are killed and more than 160 wounded as suicide bombers rip through a crowded market and a line of security force recruits in a wave of explosions and gunfire across Iraq.
May 12 - Police General Iyad Imad Mehdi was shot by unidentified gunmen as he was driving to work.
July 13 - A suicide bomber kills 34 Iraqi boys and one US soldier in Baghdad. The boys were scooping up candy thrown from an American Humvee.
July 16 - A suicide bomber detonates explosives near an LPG (propane) fuel tanker parked near a gas station south of Baghdad, sparking a massive explosion that kills more than 60 people and wounds as many as 100 in one of the worst insurgent attacks to hit the area since the US occupation of Iraq.
July 17 - A fuel truck bomb kills 98 people south of Baghdad as three more suicide car bombers strike the Iraqi capital.
July 21 - Algeria's two most senior diplomatic staff in Iraq are kidnapped from outside a restaurant in the western Mansour district.
August Troop E 108th Cavalry, 48th MIB secure and control more than 40% insurgency activity in the "triangle of death". A known route used to supply the insurgency with ammunition and explosives to forces in fallujah objecting the United States efforts on Anti-Terrorism.
August 9 - Fallen soldiers honored in northern Iraq with stiffened restraint of sector
August 13 - Three American soldiers are killed and one wounded when their vehicle strikes a pressure activated IED near Tuz Khurmatu.
September 14 - More than 12 suicide bombings in Baghdad kill about 150 people and injure over 500, the largest number killed and wounded in the city during a single day since the 2003 invasion of Iraq. 114 people die when a car bomb explodes in a Shia district of Baghdad called Kadhimiya, near a shrine where two of Shi'ite Islam's most revered Imams are buried. 17 people die in the town of Taji, near Baghdad when gunmen storm their homes. Also on this day, Sunni insurgent leader Abu Musab al-Zarqawi declared "All-out" war against Iraq's Shi'ites in a statement released on a web forum that regularly carries al Qaeda postings.
Two UK soldiers under arrest by Iraqi police in Basra following a car chase. Police officials accused them of planting bombs in a public place while dressed in civilian clothes. After being approached by Iraqi police, the two soldiers reportedly fired on the police, killing two, after which they were apprehended, sparking clashes in which UK tanks came under attack. Two civilians were reportedly killed and three UK soldiers were injured. One Iraqi official claimed that 150 prisoners escaped including the two soldiers. The arrests followed the detention of two high-ranking officials of Muqtada al-Sadr's Mahdi Army
The Pentagon announces it will investigate allegations that US soldiers posted photographs of dead Iraqis on a website so as to get access to free Internet porn. CAIR had earlier called for the investigation after the details of the site came to light.
An 82 year old British man was manhandled out of Labour Party Conference for loudly protesting that Jack Straw was lying about Britain's involvement with the Conflict in Iraq.
September 29 - Suicide bombers killed at least 114 people in the Shi'ite town of Balad, north of Baghdad.
Jean Ziegler, a Human rights investigator and senior United Nations official, has accuses the United States and occupying forces of "using hunger and deprivation of water as a weapon of war against the civilian population" in Iraq.
The Iraqi people go to the polls to vote on whether to approve the proposed constitution, amidst heavy security.
Five US Army soldiers and 2 members of the Iraqi Army die in Anbar providence in the only major act of violence committed on this first election day when their Bradley vehicle ran over and IED killing all 7 individuals instantly.
October 17 - The U.S. claims to have killed 70 insurgents near Ramadi in eastern Iraq. However, eyewitnesses maintain that most of those killed were innocentcivilians, and photographs released show locals burying at least 18 children, including infants.
The Independent Electoral Commission of Iraq issues a statement saying that statistical irregularities in the constitution ratification referendum on October 15, 2005 require that the balloting be audited, which will delay the announcement of the final count. According to the New York Times, "The statement made no mention of the possibility of fraud." though according to the BBC "Iraq's independent electoral commission says statistical irregularities in last week's referendum could indicate fraud."
October 21 - Saadoun Sughaiyer al-Janabi, the defense lawyer of Awad Hamed al-Bandar in the Al-Dujail trial, is found dead of gunshot wounds near a Baghdad mosque, after having been kidnapped on Thursday evening by unknown assailants.
October 22 - Army Staff Sgt. George T. Alexander Jr., 34, of Killeen, Texas becomes the 2000th American death in Iraq (AP)
October 24 - The Palestine Hotel, Baghdad which houses the foreign journalists was bombed with three consecutive car bombs. This hotel was rocketed previously on November 21, 2003.
October 25 - Iraq's Independent Electoral Commission announces that the country's draft constitution was approved in the vote held October 15.
October 29 - More than 20 people die when a car bomb detonates in Howaider, a Shia village near Baquba, 60 miles north of Baghdad.
October 31 -
A Pentagon report suggests that since 2004 about 26,000 Iraqi people have been either killed or injured in attacks by insurgents.
Reports indicate that 40 people have died following a United States Air raid near Karabilah in Western Iraq. The military says it was a targeted strike against Al Qaeda, whereas doctors treating the injured and dead said the dead were all civilians, including many women and children.
November 3 - Seven U.K. troops accused of murdering an Iraqi civilian have had their cases dropped after a judge ruled that there was insufficient evidence against the soldiers and that the Iraqi witnesses lied.
A series of suicide bombings kill 74 Shia worshippers at two Shi'ite mosques in the town of Khanaqin in religiously-mixed Diyala, destroying the structures. 80 people were also wounded. In Baghdad two car bombs destroy the blast wall protecting a hotel housing foreign journalists and kill eight Iraqis.
Two car bombs strike outside a Baghdad interior ministry building at the centre of a detainee abuse scandal.
The United States House of Representatives reject a Republican resolution offered by Duncan Hunter (R-California) "expressing the sense of the House of Representatives that the deployment of United States forces in Iraq be terminated immediately" by a vote of 403-3. Ohio Republican Jean Schmidt is forced by Democratic (and quiet Republican) protests to apologise to Pennsylvania Democrat John Murtha for reading a letter from a marine in which those wishing to "cut and run" from Iraq are called "cowards".
A group of Iraqi citizens walk down a path showing their purple fingers, signifying that they voted in their country’s first parliamentary election.
December - The U.S. has long maintained its involvement there is with the support of the Iraqi people, but in 2005 when asked directly, 82–87% of the Iraqi populace was opposed to U.S. occupation and wanted U.S. troops to leave. 47% of Iraqis supported attacking U.S. troops. The poll taken also showed that a large majority of Iraqis favored setting a timeline for the withdrawal of US forces, though this majority divided over whether it should be six months or two years.
December 14 - U.S. PresidentGeorge W. Bush says that the decision to invade Iraq in 2003 was the result of faulty intelligence, and accepts responsibility for that decision. He maintains that his decision was still justified.
Early returns in the Iraqi legislative election, December 2005 indicate that religious parties have done quite well, winning up 80% of the vote. Election officials are investigating more than 1,000 complaints about irregularities, 20 of them considered serious. Final results will not be released until early January.
December 22 - Tony Blair makes a surprise visit to Basra in Iraq, to address 4,000 British soldiers and discuss withdrawal. He states that "we can eventually draw down our own capability" once the Iraqi forces "build up their own strength".
December 27 -
The new right-wing government of Poland announces it will keep troops in Iraq until the end of 2006, longer than previously planned.
A mass grave is discovered in the predominantly Shia city of Karbala south of Baghdad, Iraqi police said.
December 29 - The Associated Press reports story of Farris Hassan, a young Iraqi-American teenager who travelled to Iraq without informing his parents and was picked up by the 101st Airborne.