The Bist (archaic German: Bießt, French: Bisten) is a river in France and in Germany, and a 26.3-kilometre-long (16.3 mi) left tributary of the Saar. It is 26.3 km (16.3 mi) long, of which 15.8 km (9.8 mi) within France and on the French-German border.^[1]

Bist
Bist near Wadgassen
Location
Countries	France Germany
Physical characteristics
Source
• location	Boucheporn, Moselle, Lorraine
• elevation	300 m (980 ft)
Mouth
• location	Wadgassen, Saarland
• coordinates	49°16′16″N 6°47′53″E / 49.27111°N 6.79806°E / 49.27111; 6.79806
• elevation	185 m (607 ft)
Length	26.3 km (16.3 mi)
Basin size	112.8 km2 (43.6 sq mi)
Basin features
Progression	Saar→ Moselle→ Rhine→ North Sea

The Bist begins near the French village of Boucheporn, Lorraine and flows northeastward to Creutzwald. From there it follows the Franco-German border northward 3 kilometres (1.9 mi) to Überherrn, then flows eastward to Werbeln [de; fr] (a district of Wadgassen) and northward to join the Saar immediately north of the Autobahn 620 bridge in Wadgassen, Saarland.