Roman Empire vs Ottoman Empire: Two Empires, the Same Lands

More than a thousand years apart, two great empires ruled many of the same lands around the eastern Mediterranean: the Balkans, Anatolia, the Middle East, Egypt and North Africa. Both even ruled from the same city, Constantinople, today’s Istanbul.

Roman Empire on the 3D History Globe

Roman Empire

27 BC to 476 AD in the west. Capital Rome.

Ottoman Empire on the 3D History Globe

Ottoman Empire

About 1299 to 1922. Capital Constantinople from 1453.

Roman Empire vs Ottoman Empire at a glance

Roman EmpireOttoman Empire
Dates27 BC to 476 AD in the west; the east lasted until 1453About 1299 to 1922
Largest areaAbout 5 million km², around 117 ADAbout 5 million km², late 1600s
CapitalRome, later also ConstantinopleBursa, Edirne, then Constantinople from 1453
RulerEmperorSultan
Main religionRoman gods, then Christianity from the 300sIslam, with Christian and Jewish communities
LanguageLatin in the west, Greek in the eastOttoman Turkish
Famous armyThe legionsThe Janissaries
Lands both ruledGreece, the Balkans, Anatolia, Syria, Egypt, North AfricaGreece, the Balkans, Anatolia, Syria, Egypt, North Africa

The city that links them

The Roman emperor Constantine made Constantinople a new capital in 330 AD. After Rome fell in the west, the eastern Roman Empire, later called the Byzantine Empire, ruled from there for another thousand years. In 1453 the Ottoman sultan Mehmed II captured the city and made it the Ottoman capital, which it stayed until the empire ended.

Ruling many peoples

Both empires held together people of many languages and faiths. Rome spread Latin, Roman law and citizenship. The Ottomans let religious communities run many of their own affairs, an arrangement later known as the millet system. Each lasted for centuries, far longer than most empires.

Quick facts

  • The Ottoman Empire lasted more than 600 years.
  • Roman roads and Ottoman bridges are both still used today.
  • Suleiman the Magnificent led the Ottomans at the height of their power in the 1500s.
  • Trajan led Rome at its largest, around 117 AD.
  • The Ottomans besieged Vienna twice, in 1529 and 1683.

Watch them on the 3D globe

Byzantine Empire on the 3D History Globe
The Byzantine Empire, the eastern Roman Empire that the Ottomans finally overthrew.
Open the 3D History Globe All empires

Roman Empire vs Ottoman Empire questions

Which was bigger, the Roman or Ottoman Empire?

At their largest both covered roughly 5 million km².

Which lasted longer?

The Ottoman Empire lasted about 623 years. The western Roman Empire lasted about 500 years, but the eastern half carried on until 1453.

Did the Ottomans conquer the Roman Empire?

They conquered its eastern survivor, the Byzantine Empire, taking Constantinople in 1453.

What was the capital of both empires?

Constantinople, today’s Istanbul, was a Roman capital from 330 and the Ottoman capital from 1453.

When did the Ottoman Empire end?

In 1922. The Republic of Turkey was founded in 1923.

More face-offs: see all 3D comparisons.

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