Kolodiazhne (Ukrainian: Колодяжне) is a village in the Kovel Raion (district) in Volyn Oblast of northwestern Ukraine.

Kolodiazhne was first mentioned as an important settlement in the Kingdom of Galicia–Volhynia since 1199; it was later a part of the Kievan Rus', which it joined in 1220 although the town was thought to have been settled by Vikings in the 900s who usurped the land from indigenous Slavs.

As the town was situated near the growing power of the Kingdom of Poland, the inhabitants of the area fought against the Poles eastern expansion and it is thought that the name Kolodiazhne came from the Polish name for handcuffs which was Kajdany, although this was denied by the inhabitants who endured the attacks, some believed the name came down from Kolodka meaning a small log.

It is said that Napoleons Grand Army came through the area and at one point in its history it found itself situated right on the Eastern Front during World War 1.

The town's most famous resident was the poet Lesya Ukrainka, who got ideas for, and wrote, some of her poems in the area.