Shootings and bombings struck around Baghdad, as well as in and around the northern cities of Mosul and Tuz Khurmatu, killed 15 people On Monday.
Two senior security officers were also wounded in a double bombings in the Kurdish north.
In the deadliest violence, a family of six -- two men, two women and two children -- were found dead after having been gunned down in their homes in Al-Nibaie, which lies just north of the capital.
Elsewhere, attacks in Abu Ghraib, Mosul and Tuz Khurmatu left nine others dead.
Two officers in the Kurdish peshmerga forces, meanwhile, were wounded by rare bombings against their respective cars in the northern city of Sulaimaniyah.
The twin magnetic "sticky bombs" attached to the vehicles of a brigadier general and a colonel went off minutes apart at about 7:30 am (0430 GMT) in the same neighbourhood of Sulaimaniyah, Iraqi Kurdistan's second-biggest city.
More than 6,000 people have been killed already this year in Iraq's worst bloodshed since 2008.
RA/NJF