Foreign Minister Hossein Amir-Abdollahian also perished in the crash on Sunday, along with several others in north-western Iran.
Rescue teams who arrived at the crash site in north-western Iran earlier reported finding “no sign of life.”
The helicopter, part of a convoy of three, crashed after encountering difficulties due to heavy fog in the northern region of the country.
Raisi was en route to the city of Tabriz in north-western Iran after returning from a visit to the Iran-Azerbaijan border area, according to local reports.
The incident triggered a large-scale search operation, which was hindered by adverse weather conditions.