The Moshir ad-Dowleh Mansion (Persian: ùàçñê àôÃÂñçÃÂïÃÂÃÂÃÂ) is a historic mansion in Tehran, Iran. It belonged to the Qajar era politician Hassan Pirnia. In 1906, the declaration of the Persian Constitution was written here by Mirza Nasrullah Khan, Hassan Pirnia's father.
The films Hezar Dastan and Chess of the Wind were partly filmed in this mansion.
It was listed in the national heritage sites of Iran with the number 1899 on 2 August 1997.