Konstantin Yaroslavich of Galich

Konstantin Yaroslavich (died 1255) was the first appanage prince of Galich-Mersky and Dmitrov, a son of Grand Prince Yaroslav Vsevolodovich of Vladimir and brother of Alexander Nevsky. The chronicles first name him in 1238 among the princes who survived Batu's invasion.

In 1243 he went to Karakorum while his father visited Batu, and he remained with the Mongols until 1245. After Yaroslav's death he received Galich and Dmitrov as his appanage. He died in 1255, leaving two sons, Davyd and Vasily.