Sayniq River (Arabic: نهر سينيق) is a river in Lebanon.

It is located to the south of Saida.

[1][2] It originates from the spring of Em Chammas in Berti near Jezzine,[3] and flows into the Mediterranean.

It is 23 km in length, and extends from Safi and Rihane mountains at 662 m above sea level.

[4] The Sayniq River, along with other water bodies in the region, plays a crucial role in the water security of South Lebanon, managed by the South Lebanon Water Establishment (SLWE).