Moshir ad-Dowleh Mansion

The Moshir ad-Dowleh Mansion (Persian: عمارت مشیرالدوله) is a historical mansion in Tehran, Iran. It belonged to the Qajar era politician Hassan Pirnia. The Declaration of Constitution (Persian: فرمان مشروطیت [fa]) was written here by Mirza Nasrullah Khan, Hassan Pirnia's father, in 1906.

Parts of movies like Hezar Dastan and The Chess Game of the Wind were filmed in this mansion.

It was listed in the national heritage sites of Iran with the number 1899 on 2 August 1997.