Boris of Drutsk

Boris was prince of Drutsk from the 1180s until at least 1196, a ruler of the Polotsk branch of the Rurikids, possibly a son of Vseslav Rogvolodich.

In 1196 he joined the Chernigov princes and Prince Vasilko Volodarevich in a campaign against Vitebsk, then subject to Smolensk. In the battle that routed the Smolensk army, Boris struck from the rear, captured their commander Mstislav Romanovich, and handed him over to the ruler of Chernigov.