Körfez, formerly known as Elaia, or Elaea, is a municipality and district of Kocaeli Province, Turkey.

[1] The mayor is Şener Söğüt (AKP) and the district governor is Uğur Kalkar, appointed in August 2022.

[7][8] It has borders with Şile to north, Derince from east, Dilovası from southwest and Gebze from west.

Hereke and Kirazlıyalı were independent towns within the district until they were absorbed into the municipality Körfez in 2008.

This geographical article about a location in Kocaeli Province, Turkey is a stub.