Four civilians were killed and 11 were wounded when a parked car bomb exploded at an outdoor market in Baghdad's central Sadriyah neighborhood.
A bomb went off near a bus station in the nearby al-Nahda area, killing three people and wounding seven.
Another bomb in the eastern suburb of Hussainiyah killed one civilian and wounded seven.
And two other civilians were killed and seven wounded in a car bomb explosion in the southeastern suburb of Jisr Diyala.
Also Monday, gunmen opened fire on a bus in Mosul that was carrying Shiite pilgrims traveling to the holy Shiite city of Karbala, killing seven people, including four women, and wounding eight.