Heraklion or Heraclion is the largest city and the administrative capital of the island of Crete and capital of Heraklion regional unit. It is the fifth largest city in Greece with a population of 140,730 according to the 2011 census. The population of the municipality was 173,993.

The Bronze Age palace of Knossos, also known as the Palace of Minos, is located nearby.

The ancient name Ηράκλειον was revived in the 19th century and comes from the nearby Roman port of Heracleum ("Heracles's city"), whose exact location is unknown. English usage formerly preferred the classicizing transliterations "Heraklion" or "Heraclion", but the form "Iraklion" is becoming more common.

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