In the 13th century, the Bolokhov land was devastated by the military campaigns of Daniel of Galicia as well as Mongol raids.

In the 14th century, Lithuanian prince Lubart built a fortress on the Sluch River, which was named in his honour.

In 1775, the 10th Foot Grenadier Regiment of the Polish Crown Army was formed and stationed in Lubar, but was relocated to Kamieniec Podolski the following year.

During the Second Partition of Poland, in 1793, Lubar was annexed by Russia, within which it was administratively located in the Novograd-Volynsky Uyezd in Volhynian Governorate.

During the January Uprising, on May 9, 1863, it was the site of a battle between Polish insurgents led by General Edmund Różycki and the Russians, won by the Poles.

During the Ukrainian War of Independence in 1918, Liubar was occupied by the Red Army, which was later expelled by the German forces.

In late 1919, Liubar was occupied by the Second Polish Republic, within which it was administered as part of the Volhynian District.

On September, around 1,300 Jews from the city and surroundings villages are murdered by an Einsatzgruppen including Ukrainians Hilfspolizei.