The Battle of Lanckorona is the second battle before the mount of Lanckorona and one of the greatest clashes of Polish and Russian forces during the Bar Confederation.

It takes place on May 23, 1771, near Lanckorona when a Polish formation of thirteen hundred men with eighteen cannons is suddenly attacked by four thousand Russians commanded again by general Alexander Suvorov.

The second battle is lost as the new commander on the Polish side, French envoy lieutenant-colonel Charles François Dumouriez, is caught off guard in an early morning attack by the Russian forces and is unable to assemble his men.

Many historians will argue that it was sabotage on the part of Dumouriez as he was privately outspoken against the Polish nation and its democratic aspirations.

Dumouriez was noted as calling Poles an "Asiatic nation".

Antoine-Charles du Houx and Baron de Vioménil replace Dumouriez in the Bar Confederation army.