Istanbul is in Turkey.

Quick Scoop: What country is Istanbul in?

Istanbul is the largest city in Turkey and serves as the country’s main economic, cultural, and historical hub.

It spans both Europe and Asia across the Bosporus Strait but is politically and legally part of the Republic of Turkey.

Fast facts

  • Country: Turkey.
  • Region: Marmara region of northwestern Turkey.
  • Special feature: A transcontinental city with districts on both the European and Asian sides of the Bosporus.

So even though Istanbul geographically sits in both Europe and Asia, when someone asks “what country is Istanbul in,” the clear answer is: Turkey.

TL;DR: Istanbul is a transcontinental city, but it is entirely within the country of Turkey.

Information gathered from public forums or data available on the internet and portrayed here.