Fabius, who arrived in Tehran on Wednesday morning, is scheduled to sit down with President Hassan Rouhani and his Iranian counterpart Mohammad Javad Zarif.
During his day-long visit to Iran, the top French diplomat is also expected to sit down with Iranian Minister of Industry, Trade and Mines Mohammad-Reza Nematzadeh as well as the head of Iran's Department of the Environment, Masoumeh Ebtekar.
Fabius’ visit to Iran is the first by a French foreign minister to the Islamic Republic in 12 years.