Nasrollah Pirnia, also known as Mirza Nasrollah Khan (Persian: میرزا نصرالله خان نائینی; 17 October 1840 – 13 September 1907, titled Moshir al-Dowleh), was the first Iranian Prime Minister.

[1] Born in 1840 to a family of religious leaders, he grew up in Nain before later travelling to Tehran.

In 1862 he married Hosnieh, daughter of a wealthy merchant named Mirza Taghi Ajudan.

Two of their children, Hassan and Hossein, would later draft the Persian Constitution of 1906 and play key roles in Iranian politics during the later Qajar period.

After Nasrullah's death, his eldest son Hassan Pirnia inherited the title of Moshir al-Dowleh before also serving as Prime Minister the following decade.