Iranian Foreign Minister Mohammad Javad Zarif met Turkish president and foreign minister in Ankara for diplomatic talks.
The top diplomat held a meeting with Turkish President Recep Tayyip Erdogan in Ankara on Wednesday evening.
They discussed Iran-Turkey bilateral relations and regional issues.
Separately, Zarif met his Turkish counterpart Mevlut Cavusoglu for negotiations that focused on holding Iran-Turkey joint economic commission, closer banking cooperation, and more frequent reciprocal visits.
The two ministers also discussed the Astana talks for peace in Syria.
Iran and Turkey, together with Russia, are the three guarantors of a ceasefire in Syria that has been achieved following diplomatic negotiations in the Kazakh city of Astana.
Political efforts to end fighting in Syria have gained momentum in recent months with the announcement of a ceasefire in the Arab country in early January.
Syria has been gripped by civil war since March 2011 with various terrorist groups, including Daesh (also known as ISIS or ISIL), controlling parts of it.