Foreign Ministry Spokesman Seyed Abbas Araqchi in a statement on Saturday strongly condemned the attacks, and voiced sympathy with the bereaved families of the victims.
He said that such terrorist attacks only serve the plots hatched by sponsors of terror who are seeking to undermine stability and security in Iraq.
"These terrorist actions are aimed at intensifying sectarianism and turning political differences to sectarian strife," Araqchi warned.
He further voiced Iran's support for the Iraqi government's fight against terrorism, and stated that Tehran is prepared to help Baghdad ensure security and stability in Iraq.
A wave of bomb attacks struck war-torn Iraq on Friday, leaving at least 73 people dead and 148 others wounded, police and officials said.
At least 41 people were killed and 56 others wounded in two blasts, which hit almost simultaneously in Baquba, capital of Eastern Iraq's Diyala province, after the Friday prayers, the city's mayor Abdullah Hayali said.
The two roadside bombs exploded near the Saroya mosque in Baquba, 65 km northeast of capital of Baghdad, and hit the worshipers as they were leaving the mosque after prayers, he said.
At least 22 people were killed and 57 others wounded in three roadside bomb attacks on Friday evening in Iraq's capital city of Baghdad, a police source said.
A roadside bomb exploded in the Amiriya district in Western Baghdad, killing 19 people and wounding 32 others, the police source stated.
Another roadside bomb in the Doraa district in Southern Baghdad killed two people and wounded 20 others, he said.
A third roadside bomb exploded in the Gazaliyah district in Western Baghdad, killing one civilian and wounding five others, the source said.
In the flashpoint city of Fulluja, some 50 km West of Baghdad, a roadside bomb struck a coffee shop and left two people dead and 10 others wounded, he added.
Also on Friday, at least eight people were killed and 25 others wounded in a roadside bomb attack at a funeral in central Iraq, an Interior Ministry source said.
The roadside bomb exploded at the funeral for a local official in the town of Madain, some 30 km South of Baghdad, the source said.