The Caravanserai of Sa’d al-Saltaneh is a large Caravanserai located in the city of Qazvin in Qazvin Province of Iran that was built during the Qajar era. The caravanserai is one of Persia’s best preserved urban caravanserais. The builder (patron) of this large caravanserai was a person by the name Sa’d al-Saltaneh Isfahani for whom the caravanserai is named after.