Walid al-Moallem is expected to discuss with Zarif about the latest development in Syria in department of Foreign Ministry.
During visit to Tehran, he is due to meet other Iranian officials.
Amid scattered reports of clashes and airstrikes, a cease-fire between the Syrian government and rebel groups tentatively took hold across the country on Friday.
Zarif and his Russian counterpart, Sergey Lavrov held a phone call on Thursday, discussed about the latest development in Syria.
A few hours later, in a post on his Twitter Zarif said, “ceasefire in Syria is a major achievement.”