The Battle of Loyew (Belarusian: Бітва пад Лоевам, Ukrainian: Битва під Лоєвом, Polish: Bitwa pod Łojowem; 31 July 1649) was fought between the Zaporozhian Host against the Polish–Lithuanian Commonwealth as a part of the Khmelnytsky Uprising.

[1] Prince Janusz Radziwiłł took the Polish–Lithuanian forces numbered about 10,000 men, including around 800 winged hussars, 1,000 infantry and the rest is lighter cavalry and artillery in the field to challenge him.

Hetman Bohdan Khmelnytsky, leader of the Zaporozhian Cossacks, learned about Prince Janusz Radziwiłł's plans while besieging Zbarazh in 10 July — 22 August, 1649.

In the meantime, a forces of the Zaporozhian Cossacks under the command of Colonel Stepan Pobodailo crossed the Sozh River to help their allies, but were defeated by the Crown Army.

[6] The Polish–Lithuanian Commonwealth’s forces retook control of the Minsk Voivodeship, but lack of supplies prevented Prince Janusz Radziwiłł from advancing on Kyiv against the Zaporozhian Cossacks.