Mstislav II Izyaslavich (Мстислав Изяславич in Russian) (? - 1170), Kniaz' (Prince) of Pereyaslav, Volodymyr-Volynsky and Velikiy Kniaz (Grand Prince) of Kiev (1167-1169, 1170). Son of Izyaslav Mstislavich, Velikiy Kniaz' (Grand Prince) of Kiev. Along with his father, he participated in the wars against Yury Dolgoruky and the Chernigov princes. After an initial victory against the Cumans in 1153, Mstislav was defeated by the Cumans at the Psyol river. Yury Dolgoruky forced him to flee to Poland in 1155, but the next year Mstislav returned with a new army and defeated Dolgoruky at Volodymyr-Volynsky. Dolgoruky died in 1157, and Mstislav had himself crowned at Volodymyr-Volynsky. In 1151 Mstislav married Agnieszka, the daughter of King Boleslaus III of Poland. They had three sons:
- Roman Mstislavich (c. 1152-1205)
- Sviatoslav Mstislavich, Prince of Brest
- Vsevolod Mstislavich of Volhynia, Prince of Belz, Prince of Volodymyr-Volynsky (died 1196)
| Preceded by Iziaslav III |
Grand Prince of Kiev | Succeeded by Gleb I |
