Assyrians in Syria (ܐܬܘܪܝܐ ܕܣܘܪܝܐ, الآشوريون في سوريا) are an ethnic and linguistic minority that are indigenous to Upper Mesopotamia, the north-eastern half of Syria. Syrian-Assyrians are people of Assyrian descent living in Syria, and those in the Assyrian diaspora who are of Syrian-Assyrian heritage.
They live primarily in Al-Hasakah Governorate, with a significant presence in Hasakah city and the cities of Qamishli, Malikiyah, Ras al-Ayn, and Qahtaniyah, as well as in Tell Tamer and nearby villages. Some have migrated to Damascus and other western cities beyond the border of their indigenous Mesopotamia at the Euphrates River. They share a common history and ethnic identity, rooted in shared linguistic, cultural and religious traditions, with Assyrians in Turkey, Assyrians in Iraq and Assyrians in Iran, as well as with the Assyrian diaspora.
During the Old Assyrian Empire (2000–1750 BC), Middle Assyrian Empire (1365–1020 BC) and Neo Assyrian Empire (911–599 BC) much of, and often the entirety of the modern country of Syria, was under Assyrian rule, which founded in Northwestern Mesopotamia (modern-day Iraq). The northeastern part of the land became an integral part of Assyria proper during the 2nd millennium BC. Thus the presence of originally Akkadian-speaking and later Eastern Aramaic-speaking Assyrians in the northeastern part of the modern country dates back over 4000 years, where they lived alongside a diverse set of other peoples such as Hittites, Hurrians and Amorites throughout the ages. Traces of the long era of Assyrian settlement can be seen at numerous archaeological sites across the region. Important Assyrian cities in the region in ancient times include Til-Barsip, Carchemish, Guzana, Shubat-Enlil and Dur-Katlimmu.
The northeast of modern-day Syria was a part of Achaemenid Assyria (Athura) which was a geographical area within the Achaemenid Empire in Mesopotamia between 546 and 332 BC, then Seleucid Syria (312-150 BC), when the name Syria which was originally a 9th-century BC Indo-European corruption of Assyria and had hitherto referred only to Assyria itself, also became applied to a region long known as Aramea/Eber Nari.