1 September: Óglaigh na hÉireann was believed to have been behind the planting of a 600 lb roadside bomb close to the border near Forkill, County Armagh. It was likely meant to blow up a PSNI patrol. However, it was abandoned by those who planted it, and defused by the British Army.
16 October: Óglaigh na hÉireann claimed responsibility for detonating a booby-trap bomb under a PSNI officer's car in Kingsdale Park, east Belfast. The bomb exploded as the officer's girlfriend was driving the car, although she suffered minor wounds. The bomb was planted under the passenger side, as the woman usually drove her partner to work.
21 November: Óglaigh na hÉireann was blamed for a failed car bomb attack on the Northern Ireland Policing Board headquarters in Belfast. A 400 lb car bomb was driven through a security barrier by two men, who then fled. The bomb partially exploded.
8 January: Óglaigh na hÉireann claimed responsibility for an under-car booby-trap bomb attack on a PSNI officer in Randalstown, County Antrim. The bomb exploded shortly after the officer left his home. He was badly hurt in the attack and had to have one of his legs amputated.
12 April: Óglaigh na hÉireann was blamed for a car bomb attack on Palace Barracks in Holywood, County Down. The British Army base houses MI5's Northern Ireland headquarters. A taxi driver had been forced to drive the 120 lb bomb to the base. He abandoned the car shortly before midnight, prompting the PSNI to clear the area. The bomb exploded twenty minutes later, lightly wounding an elderly man. This attack was initially blamed on the Real IRA.
6 May: Óglaigh na hÉireann's Derry Brigade claimed responsibility for disrupting an election count (for the 2010 Westminster election) at Templemore Sports Complex in Derry. The group had hidden a hoax device in the building before the count began. As the count was underway, Óglaigh na hÉireann members forced a taxi driver to drive a pipe bomb to the building. A warning was issued, and the building was evacuated shortly before midnight. The British Army carried out a controlled explosion on the pipe bomb, but the other device was not found for a further four days.
12 July: Óglaigh na hÉireann's Derry Brigade claimed responsibility for a gun attack on a burning PSNI vehicle during a riot. Five shots were fired at the vehicle after it had been hit with petrol bombs in the Bogside area of Derry after several hours of rioting (as a result of The Twelfth parades).
3 August: Óglaigh na hÉireann's Derry Brigade claimed responsibility for detonating a 200lb car bomb outside Strand Road PSNI base in Derry. Like the attack on 12 April, a taxi driver was forced to drive the bomb to the base. The bomb exploded at 0320, 22 minutes earlier than the warning had said, but there were no casualties.
21 September: Óglaigh na hÉireann's Derry Brigade claimed responsibility for a gun attack in Derry. The group said that its members had went to a house to order the occupant, Sean Healy, to leave the country. When the gunmen found that he was not at home, they fired shots through the windows of his car.
5 November: Óglaigh na hÉireann's Belfast Brigade claimed responsibility for a grenade attack on three PSNI officers in Belfast. The officers were investigating a robbery on Shaws Road when a man on a bike threw the grenade. All three were injured and one suffered severe arm wounds.
7 February: Óglaigh na hÉireann claimed responsibility for an arson attack on a taxi depot on Oldpark Road, Belfast. It claimed that the owners were using the depot as a cover for drug dealing.
27 March: Óglaigh na hÉireann claimed responsibility for planting a car bomb in Derry. The 110 pounds (50 kg) bomb was left in a car-park on Bishop Street, beside the court-house. The group issued a telephoned warning and the bomb was made safe by the security forces.
28 March: Óglaigh na hÉireann claimed responsibility for throwing a "coffee-jar bomb" at the PSNI on Grosvenor Road, Belfast. The device deflected into waste ground. The group then issued a telephoned warning and it was made safe by the security forces.
5 January: Óglaigh na hÉireann claimed responsibility for planting a booby-trap bomb in a soldier's car at Blackdam Court, Belfast. It said that the device was hidden under the driver's seat and was connected to the seat buckle. However, the device was spotted and later made safe by the security forces.
28 April: Óglaigh na hÉireann were blamed by security forces for planting at least one of two bombs on 28 April. They were believed to have placed a bomb underneath a car because it had once belonged to a retired policeman in a loyalist area of Belfast. However, sources said it had changed hands and was being moved in the Greater Shankill area.
6 June: Óglaigh na hÉireann claimed responsibility for a grenade attack on a PSNI vehicle at Whin Park, Belfast. A number of vehicles were damaged but nobody was injured.
11 June: Óglaigh na hÉireann claimed responsibility for a grenade attack on the PSNI at Barnfield Road, Dunmurry. Local residents reported hearing a loud bang in the area and the police issued an appeal for information. Nobody was injured.
27 July: Óglaigh na hÉireann claimed responsibility for attacking a PSNI landrover on Glen Road, Belfast. A single shot was fired at the landrover and ONH claimed they had fired a horizontal mortar, however police later said they were satisfied that a video which purported to show the attack was a hoax and that "nothing untoward" was found. 
29 January: Óglaigh na hÉireann issued a bomb warning to a North Belfast community centre, forcing it to be evacuated. A pipe bomb was found in the building's back yard and taken away by the British Army.
15 March: A mortar attack on New Barnsley PSNI base in Belfast was foiled after a PSNI officer spotted the launcher. Óglaigh na hÉireann claimed responsibility.
23 March: The British Army defused a car bomb abandoned on the Derrylin Road near Enniskillen. Óglaigh na hÉireann said it had planned to detonate it at the Lough Erne Resort—the hotel hosting the 39th G8 summit—but had to abort the attack.
16 May: Shots were fired and a bomb thrown at PSNI officers as they got out of their vehicle in Foxes Glen, Belfast. The three officers dived for cover and drove away at speed. Police did not return to the scene for a number of hours. Óglaigh na hÉireann claimed responsibility.
28 May: In north Belfast, two pipe bombs were thrown at PSNI officers as they got out of their armoured vehicle. The bombs exploded but caused no injuries. Óglaigh na hÉireann claimed responsibility.