Samandar (also Semender) was a city in Khazaria on the western edge of the Caspian Sea, south of Atil and north of the Caucasus.

It was inhabited by Jews, Christians, Muslims, and members of other religious faiths, and had houses of worship for each faith. From the 720s to about 750, Samandar served as the capital of Khazaria. Samandar was famous for its fertile gardens and vineyards. Large quantities of wine were made there.

Some sources refer to a Hunnish tribe called "Samander" or "Zabender"; this tribe may have given the town its name.