Mstislav II Iziaslavich^[a] (died 19 August 1170) was Grand Prince of Kiev from 1158 to 1159 and again from 1167 to 1169.^[1]

Mstislav was the son of Grand Prince Iziaslav II 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 Psel 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 Vladimir-Volynsk. Dolgoruky died in 1157, and Mstislav had himself crowned at Vladimir.

In 1169, Kiev was sacked by Andrey Bogolyubsky who removed Mstislav as grand prince.^[2] In March 1169, he defended Kiev from the troops of Prince Andrey Bogolyubsky, but was forced to leave the city and retreat to Volhynia. In 1170, he retook Kiev. He died in Vladimir and was buried in the Cathedral of the Holy Mother of God.^[3]

In 1151, Mstislav married Agnes, the daughter of Duke Bolesław III of Poland.^[4] They had:

1. Roman, Prince of Novgorod (c. 1152–1205)^[5]
2. Sviatoslav, Prince of Brest
3. Vsevolod Mstislavich of Volhynia (died 1196)

• Berend, Nora; Urbańczyk, Przemysław; Wiszewski, Przemysław (2013). Central Europe in the High Middle Ages: Bohemia, Hungary and Poland, c.900–c.1300. Cambridge University Press.
• Martin, Janet (1986). Treasure of the Land of Darkness: The Fur Trade and Its Significance for Medieval Russia. Cambridge University Press.
• Raffensperger, Christian; Ostrowski, Donald (2023). The Ruling Families Of Rus. Reaktion Books. ISBN 9781789147452.
• Morby, John E. (2002). Dynasties of the world: a chronological and genealogical handbook. Oxford University Press. ISBN 9780198604730.
• Wittkamp, Kristina (2024). "Historical remembrance and Medievalism in the Principality of Halyč-Volyn'". In Wittkamp, Kristina (ed.). Borderland Societies in East-Central Europe: Heterotopias, transculturality and identities in spatial manifestations. Logo Verlag Berlin GmbH. pp. 167–198.