Police officials said a bomb exploded on a commercial street in the town of Madain, about 20 kilometres (14 miles) southeast of the capital, killing four people and wounding nine others.
In the northern Baghdad suburb of Taji a bomb blast near shops killed three people and wounded 11 others. A roadside bomb struck an army patrol in the western suburbs, killing three soldiers and wounding six others, police officials said.
In Baghdad, a bomb exploded in the city centre near a bakery shop, killing two people and wounding four, security officials said. They said all the dead were civilians.