Istanbul, a city between two coines, has preserved a glorious history of various names and cultures from the Byzaine era to the Ottoman Empire.
Istanbul, a city that has changed its name many times throughout its history, has always played an importa role in history and politics. This city, as the only capital of the world that spans two coines, is considered one of the most strategic and historical places in the world.
Istanbul was first known as “Byzaium” and then it was renamed to “Constainople”; This era was accompanied by the prosperity and transformation of the city io the cultural and economic ceer of Eastern Rome and the Byzaine Empire. After the conquest of the Ottomans, Constainople became the new capital of this empire; However, its name did not officially change for ceuries.
With the formation of the Republic of Türkiye in the early 20th ceury, the city’s name was officially changed to “Istanbul” and it remains one of the most importa cities in the world. Today, Istanbul, with its rich ideity and cultural diversity, is a glimpse of the tumultuous past and fruitful history of this region. In this article, you will learn more about how the names of this city changed and its cultural developmes.
How did Constainople become Istanbul?
Istanbul; A bridge between East and West
Istanbul is a very rare and unique city and the only place that is located in Europe and the Middle East at the same time; In fact, this Turkish metropolis is considered an Asian and European city at the same time.
This particular geography is a good explanation for the question of why Istanbul, when it bore the name of Constainople, was the capital of the Eastern Roman Empire, or the Byzaine Empire; Also, why did it later become the power ceer of the Ottoman sultans, whose influence spread to Africa and the Arab world?

Photo source: aljazeera; Name of the photographer: unknown
The question may arise when exactly did Constainople change its name to Istanbul. The answer is that, corary to popular belief, this did not happen with the capture of the city by Ottoman forces in 1453 AD. The Turkish-speaking conquerors, long after the conquest of the city, used the name “Constainoye” (in Turkish; Кастантиние Kostainiyye) in official documes.
Christoph Herzog, head of the Turkish Studies Departme at the University of Bamberg, Germany, says this:
It is a fact that the Ottomans meioned “Istanbul” with the name of “Konstainiye” in thousands of their official documes.

Photo source: TÜRK-TARİH-KURUMU; Name of the photographer: unknown
Cultural changes and differe names of Istanbul
The largest city in prese-day Turkey had many differe names before it took the name “Constainople”. This city was founded by the Greeks in 657 BC with the name “Byzaion” (Bazaion), which was later changed to the Latin name “Byzaium”.
In addition to that and in honor of the son of the Roman emperor, it was also called “New Rome” and “Augusta Aonina” and nicknames such as “Queen of Cities” or simply “City”. (The City) has also had.

Photo Source: Pierest; Name of the photographer: unknown
The Roman emperor, “Constaine the Great”, who is also known as the first Roman Christian emperor, changed the name of the city to “Constainople” in 330 BC in his honor, and this name remained uil the arrival of the Ottomans. stayed
The Ottomans did not officially change the name of Constainople when they captured it in the 15th ceury; But this conquest brought significa geopolitical changes; Because the ceer of gravity of Constainople moved to the east and away from Europe.
“Christoph Herzog” says this:
I think that the strategic and symbolic importance of Istanbul was known even then; As this city was also chosen as the new capital of the Ottoman Empire.

Photo source: fikriyat; Name of the photographer: unknown
People in other parts of the empire began to use the word “Istanpolin”, which in Turkish means “toward the city” (from the Greek word for the city or eis tan polin), and in fact, to describe the new headquarters colloquially. The power of the Ottoman Empire was used.
“Istanbul” was used more over time; But “Constainople” remained as the official name. Over the ceuries and gradually, the slang changed and finally, “Istanbul” gave way to “Istanbul”.

photo source: aksam; Name of the photographer: unknown
Recognition of the name of Istanbul
After the defeat of the Ottoman Empire in World War I, their monarchy was abolished in 1922 and the Republic of Türkiye was born in 1923. Shortly thereafter, in 1930, the Turkish Postal Service decided to register “Istanbul” as the official name of the city due to the perceived need for further clarification.
Other institutions soon followed suit, and in the same year, the US State Departme and other governmes around the world used the title “Istanbul” in their official communications.

Photo source: fikriyat; Name of the photographer: unknown
Based on all the available documes, it is not possible to say exactly when the name “Constainople” changed to “Istanbul”; Because this name became official when people had been using the word “Istanbul” and its various forms for a long time. In other words, it is difficult to determine a specific date for the transmission of this word in popular speech; Because language evolves gradually.
“Herzog” believes that the traces of the rich history of Istanbul with its many names can be seen in the cultural structure of the city. As the capital of an empire that spanned three coines for ceuries, this city housed many groups of people.
Source of photos: fikriyat, aydinlik, Pierest; Name of the photographer: unknown
What do you know about the history of the city of Istanbul, the course of change and cultural developmes and differe names? Please share your valuable opinion with us and other Kojaro companions.
Cover photo: Sultan Ahmed Mosque or Blue Mosque of Istanbul; Cover photo source: livescience; Name of the photographer: unknown
Frequely asked questions
When was Constainople officially renamed Istanbul?
The city of Constainople was renamed to Istanbul in 1930. This name change was done after the Republic of Turkey in order to clarify official and governme communications, and various institutions soon followed suit.
Why has Istanbul had many names?
Istanbul had many names due to its geographical and historical location in differe cultures and empires; In fact, each new empire gives it a new name and ideity.



