Esfandiar Rahim Mashaei (Persian: اسفندیار رحیم‌مشایی; born 16 November 1960) is an Iranian conservative politician and former intelligence officer. As a senior Cabinet member in the administration of President Mahmoud Ahmadinejad, he served as Chief of Staff from 2009 to 2013, and served as the fourth first vice president of Iran for one week in 2009 until his resignation was ordered by Supreme Leader Ayatollah Ali Khamenei.