Theodore Calliopas was an Exarch of Ravenna twice (643–c. 645, 653–before 666).

Nothing is known of Theodore's first term, except that he succeeded Isaac 643, and was replaced by Plato

Plato (exarch)

Plato was the Exarch of Ravenna from 646 to 649. He is known primarily for his monothelitism and his opposition to the Pope Theodore I. He convinced the Patriarch Paul II of Constantinople to break with the pope....

 c. 645.

Following the death of the Exarch Olympius

Olympius (exarch)

Olympius was an Exarch of Ravenna . Prior to his term as exarch, Olympius was an imperial chamberlain at Constantinople.In 649, according to the Liber Pontificalis, the Byzantine Emperor Constans II ordered Olympius to arrest Pope Martin I on the grounds that the pope's election had not been...

 in 652, however, he was returned to his former position. Theodore subsequently carried out the orders given to his predecessor, to arrest Pope Martin I

Pope Martin I

Pope Martin I, born near Todi, Umbria in the place now named after him , was pope from 649 to 653, succeeding Pope Theodore I in July 5, 649. The only pope during the Byzantine Papacy whose election was not approved by a iussio from Constantinople, Martin I was abducted by Constans II and died in...

. The exarch entered Rome

Rome

Rome is the capital of Italy and the country's largest and most populated city and comune, with over 2.7 million residents in . The city is located in the central-western portion of the Italian Peninsula, on the Tiber River within the Lazio region of Italy.Rome's history spans two and a half...

 in 653, whereupon he and a detachment of soldiers dragged the pope from the Lateran

Lateran

Lateran and Laterano are the shared names of several architectural projects throughout Rome. The properties were once owned by the Lateranus family of the former Roman Empire...

, and then sent him on a ship to Naxos

Naxos (island)

Naxos is a Greek island, the largest island in the Cyclades island group in the Aegean. It was the centre of archaic Cycladic culture....

. Theodore then attempted, without success, to convince the Romans to elect a new pope; only in the next year was Eugene I

Pope Eugene I

Pope Saint Eugene I or Eugenius I, was pope from 10 August 654, to 1 June 657.He was a native of Rome, born to one Rufinianus. He was elected pope on 10 August 654, ascended in 655, and died on 1 June 657, of natural causes.-Early life:...

 made pope. Before 666 he was succeeded as exarch by Gregory

Gregory (exarch)

Gregory was an Exarch of Ravenna .Gregory succeeded Theodore I Calliopas as Exarch. His tenure is mostly known for his support of the Archbishop of Ravenna in the latter's struggles with the papacy over the independence of the sea...

.