The acting president of Turkey (Turkish: Türkiye cumhurbaşkanı vekili) is a temporary post provided by the Constitution of Turkey.
If the office of the President becomes vacant, the Presidential election is held within 45 days.
[1] Prior to the 2017 Turkish constitutional referendum, the role of acting president was given to the Speaker of the Grand National Assembly of Turkey.
Following the outcome of the referendum, the relevant article in the constitution was changed from the Speaker to the Vice President of Turkey.
[2] Article 106, Chapter 2: The following politicians served as acting presidents.