The attacks come as Iraq witnesses its worst violence since 2008, a surge in unrest that has killed more than 5,400 people this year that has persisted despite authorities having carried out a swathe of operations and implemented tightened security measures.
Since the beginning of 2013, AFP has recorded just 16 days in which there were no deaths from violence in Iraq, the most recent of which was May 24.
The months-long surge in unrest drew condemnation from the Pope today in his regular address to tens of thousands of worshippers massed in Vatican City.
The deadliest of the attacks was in Abu Ghraib, just west of Baghdad, where two people were killed in a roadside bomb, while a magnetic "sticky bomb" attached to a car in the Baghdad neighbourhood of Adhamiyah killed a policeman.
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Attacks also struck the restive central city of Baquba and nearby towns, the former insurgent bastion of Fallujah to the west of Baghdad, and the cities of Mosul, Kirkuk and Tikrit, all to the north of the capital.
In Tarmiyah, north of Baghdad, two suicide bombers attacked a house where a security meeting was taking place at about 11:30 pm local time yesterday, killing 11 people and wounding at least 20.
One bomber detonated explosives at a gate leading to the house, while the second managed to enter the building itself.
The dead were four soldiers, including a brigadier general, three police, among them a lieutenant colonel, and four Sahwa anti-Al-Qaeda fighters.
And near the northern city of Mosul, a suicide bomber detonated a vehicle rigged with explosives near a police checkpoint, killing eight people, among them three police, and wounding 25.