Hossein Amir-Abdollahian will head to Moscow on Monday where he plans to meet with his Russian counterpart Mikhail Bogdanov and other top officials.
Amir-Abdollahian and Bogdanov have in turns been hosting bilateral meetings on Syria since the crisis in the Arab country broke out.
Iran, Russia and China, among other countries, have warned against foreign military intervention in Syria, which has been gripped by deadly unrest since 2011.
The Russian navy has sent four more ships to the eastern Mediterranean, near the Syrian coast, as the United States considers launching a military offensive against the Arab country.
Meanwhile, Russian President Vladimir Putin, who hosted a G20 summit in St. Petersburg, said on Friday that Moscow will help Syria if it comes under attack.
The war rhetoric against Syria intensified after foreign-backed opposition forces accused the government of President Bashar al-Assad of launching the chemical attack on militant strongholds in the suburbs of Damascus on August 21.
Damascus has vehemently denied the accusations, saying the attack was carried out by the militants themselves as a false-flag operation.
On August 31, US President Barack Obama said he has decided that Washington must take military action against the Syrian government, which would mean a unilateral military strike without a UN mandate.
Obama said that despite having made up his mind, he will take the case to US Congress. But he added that he is prepared to order military action against the Syrian government at any time.
On Wednesday, the US Senate Foreign Relations Committee voted 10-7 in favor of a resolution authorizing the Obama administration to attack Syria.
