Rossel (French: Rosselle; German: Rossel) is a river flowing on the border of the department of Moselle (France) and Saarland (Germany). It rises in Longeville-les-Saint-Avold near the border of France and Germany and flows northwards into the Saar near Völklingen. Its course within France and on the French-German border is 32.8 km (20.4 mi) long.

Towns along the Rossel are:

• in France: Longeville-lès-Saint-Avold, Boucheporn, Saint-Avold, Macheren, Betting, Hombourg-Haut, Freyming-Merlebach, Béning-lès-Saint-Avold, Cocheren, Rosbruck, Morsbach, Forbach, Petite-Rosselle
• in Germany: Großrosseln, Völklingen and Saarbrücken

• List of rivers of Saarland