Category
page 1Emperors

emperor
thumb|Emperor Naruhito and [[Empress Masako of Japan. The Emperor and Empress of Japan are the only current monarchs in the world left carrying this title.]]

tsar
thumb|Simeon I of Bulgaria, the first Bulgarian tsar and the first person who bore the title "tsar", by [[Alphonse Mucha|alt=Alphonse Mucha's The Slav Epic cycle No.4: Tsar Simeon I of Bulgaria (1923)]]
thumb|Reception of the Tsar of Russia in the Moscow Kremlin, by [[Ivan Makarov]]
thumb|Crowning of Stefan Dušan, [[Emperor of the Serbs, as tsar, by Paja Jovanović]]
Ahmed Shahe Durrani
founder of the Afghan Durrani Empire (r. 1747–1772)

Roman Tetrarchy
The Tetrarchy was the system instituted by Roman emperor Diocletian to govern the ancient Roman Empire by dividing it between two emperors, the augusti, and their junior colleagues and designated successors, the caesares. It was kept in place between AD 293 and 324.
King of Kings
ruling title used by certain historical monarchs
Ivar Vidfamne
legendary Scandinavian king
king-emperor
thumb|Signature of King-Emperor George V, King of the United Kingdom and the British [[Dominions, and Emperor of India (1910–1936).The 'R' and 'I' after his name indicate 'King' and 'Emperor' in Latin ('Rex' and 'Imperator').]]
Conference of Carnuntum
Council of Carnuntum