Conisbrough (frequently misspelled Conisborough) is a small town located roughly midway between Doncaster and Rotherham in South Yorkshire, England. It is built alongside the River Don at .

Conisbrough contains what is believed to be the oldest building in South Yorkshire: the probably 8th century Anglo-Saxon St Peter's Church. It also contains one of South Yorkshire's most popular tourist destination: Conisbrough Castle.

The town might be identical with Kaerconan (short Conan), a town fortified by Aurelianus, king of the Britons after his victory over the Saxon forces of Hengist (Historia Regum Britanniae viii, 7). The captive Saxon leader Hengist was hacked to pieces by Eldol outside the town walls. The Town was called Cunungeburc in the time of Geoffrey of Monmouth.

In the mid-1990s, a new tourist attraction, Earth Centre , opened on the nearby site of the former Cadeby Main Colliery . A leisure centre has been built on the site of the former Denaby Main Colliery .

Famous people from Conisbrough include Tony Christie.