The UN nuclear chief is expected to arrive in Tehran on Wednesday night at the invitation of Iran.
Grossi is scheduled to hold formal meetings with Iranian officials on Thursday, November 14.
In an interview with Al Arabiya television channel in September, Grossi expressed the UN nuclear agency’s desire to visit Tehran and hold talks with the administration of Iranian President Masoud Pezeshkian.
The IAEA director general also said he had received a response from Pezeshkian on assurances about Iran’s peaceful nuclear program.