Tepealtı (Kurdish: Tel Yaqub; Syriac: Tel-Ya’qub)[nb 1] is a neighbourhood in the municipality and district of Nusaybin, Mardin Province in Turkey.

[1][4] Tel-Ya’qub (today called Tepealtı) was historically inhabited by Syriac Orthodox Assyrians.

[5] It was populated by 300 Assyrians in 1914, 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.