In the cafe attack, a bomb exploded in the evening hours inside a small cafe in the capital's northeastern suburb of Husseiniyah, killing four people and wounding eight, police officials said.
Two hours later, a bomb went off in a commercial street in Baghdad's southern district of Dora, killing two people and wounded five.
Earlier, a roadside bomb exploded near an outdoor market in the town of Youssifiyah, about 20 kilometres south of Baghdad, killing three people and wounding nine.
And in the afternoon, a gunman riding a motorbike opened fire on a group of people walking in the street in the town of Madian,south of Baghdad, killing one person and wounding four.
Medical officials confirmed the casualty figures for all attacks. All officials spoke on condition of anonymity because they were not authorised to talk to media.
Violence has surged in Iraq recently. According to the United Nations, 8,868 people were killed in Iraq last year the country's highest death toll since the peak of sectarian bloodletting in 2007 and 2008.
The withdrawal of US forces, which had acted as a buffer between Shiites and Sunnis, is thought to have contributed to the rise in violence in addition to the use of excessive deadly force by the Shiite-led security forces against Sunni protesters.
