Mirza Yahya Khan Moshir od-Dowleh Qazvini (; 1832 â 20 January 1892), was an Iranian politician and minister during the Qajar era. He was the fourth husband to a sister of Naser al-Din Shah Qajar, Ezzat ed-Dowleh.
Moshir od-Dowleh was born in 1832 in Qazvin. He was the son of Mirza Nabi Khan Amir od-Dowleh, who served as Governor of Fares and Isfahan. Moshir od-Dowleh finished his higher education in Paris, France. He was married to the Shah's sister Ezzat od-Dowleh, in 1868. Moshir od-Dowleh was foreign minister from 5 February 1886 to 1 August 1887 and was Justice Minister from 1888 until 1891. Mirza Yahya Khan Moshir od-Dowleh died in Tehran and was buried in Mashhed in 1892.