<page_title> List of Iranian Presidents by longevity </page_title> <section_title> Iranian Presidents' ages </section_title> <table> <cell> Hassan Rouhani <col_header> President </col_header> </cell> <cell> 64 years, 264 days <col_header> Age at inauguration </col_header> </cell> </table>
The oldest person to become president was Hassan Rouhani, at the age of 64 years, 264 days.