Zarif, who is in Baghdad, said Rouhani will visit the Arab country on March 11.
The Iranian top diplomat added that Rouhani’s trip is aimed at boosting bilateral relation between Tehran and Baghdad.
Heading a high-ranking Iranian delegation, Zarif arrived in Baghdad earlier on Sunday for an official visit.
The visit comes against the backdrop of Iran’s efforts to boost its foreign trade in the US sanctions era.
Iraq’s foreign minister said recently that his country is “not obliged” to abide by sanctions imposed by the US against Iran and would be pursuing options to continue bilateral trade.