Tahmasp Mirza Moayyed od-Dowleh

Tahmasp Mirza Moayyed od-Dowleh (Persian: تهماسب میرزا مؤیدالدوله) was a Qajar prince and governor in 19th-century Iran.

He was the second son of Mohammad-Ali Mirza Dowlatshah and grandson of Fath-Ali Shah Qajar (r. 1797–1834).

In 1848/49, he replaced Fazl Ali Khan Qarabaghi as the governor of the Kerman province under the orders of the prime minister Amir Kabir.

[2] However, he did not make much progress during his term, and was in 1859 replaced by another cousin, Morad Mirza Hesam o-Saltaneh.

In the same year, he was appointed as the governor of the Kermanshah province, thus succeeding his younger brother Emamqoli Mirza Emad od-Dowleh.