Tepeüstü (Kurdish: Tilminar; Syriac: Tel-Manar)[nb 1] is a neighbourhood in the municipality and district of Nusaybin, Mardin Province in Turkey.

[1][4] Tel-Manar (today called Tepeüstü) was historically inhabited by Syriac Orthodox Assyrians.

[5] In 1914, it was populated by 150 Assyrians, as per the list presented to the Paris Peace Conference by the Assyro-Chaldean delegation.

[6] There were ten Assyrian families in 1915.

[7] Amidst the Sayfo, the Assyrians took refuge at Mharkan, where they were then killed by Yusuf Hajo.