Armenian PM Nikol Pashinyan was welcomed by Hassan Rouhani in the official residence of the Iranian president.
The official welcoming ceremony was followed by talks between the Armenian PM and Iranian president.
Nikol Pashinyan, has arrived in Iran, together with his wife, Anna Hakobyan, on Wednesday morning.
Subsequently, the leaders of the two countries will make statements before the mass media representatives, and sum up the results of their talks.
In the evening, Pashinyan is scheduled to meet with representatives of the Armenian community of Tehran.