A few hours after the deadly incident, Hossein Jaberi Ansari extended condolences to the Turkish government and nation and the bereaved families of the victims.
He also reiterated the need for concerted and serious action by the international community in the fight against terrorism and extremism.
At least 11 people were killed and 36 others injured after a parked car packed with explosives was detonated by remote control in central Istanbul during the morning rush hour as police buses passed.
Turkey has suffered a spate of bombings this year, including two attacks in tourist areas of Istanbul blamed on Daesh (ISIL) terrorist group and two car bombings in the capital, Ankara, which were claimed by a Kurdish militant group.