Ortaköy or Gülharrin is a neighbourhood of the municipality and district of Artuklu, Mardin Province, Turkey.

[1] Its population is 10,363 (2022).

[2] Before the 2013 reorganisation, it was a town (belde).

[3][4] It is populated by Arabs of the Tat tribe.

Historic population figures of Ortaköy:[6][2]