The announcement was made in a tweet on Tuesday by the Swiss Embassy in the Iranian capital.
“Federal Councillor @ignaziocassis will make an official visit to Iran from 5 to 7 September 2020 as part of the celebrations marking 100 years of Switzerland's diplomatic presence in Tehran.”
On 6 September, Mr Cassis will open an exhibition at the historic Negarestan Garden in Tehran on the history of Swiss-Iranian bilateral relations,” it added in a statement attached to its message.
“On 7 September, Mr Cassis will meet with Iranian President Hassan Rouhani, Foreign Minister Mohammad Javad Zarif and Secretary of the Supreme National Security Council Ali Shamkhani.”
Mr Cassis and his Iranian hosts will also discuss current developments concerning the nuclear deal and the situation in the Middle East.
“They will pay a courtesy visit to the new speaker of the Iranian Parliament, Mohammad Bagher Qalibaf.”
IRNA contributed to this story.