Fort Schanze, Maritime fortification in Kronstadt, Russia.

Fort Schanze is a late 19th-century concrete battery group on the western tip of Kotlin Island, built 1897–1902 on the site of earlier earthworks. It comprises a northern gun battery with four extra cannons for repelling landings, a central mortar battery, and a later southern gun battery of identical design. A retractable searchlight was installed on the right flank.

Built in 1706 during the Great Northern War on orders from Peter I, the fort guarded the emerging Russian navy and the newly founded Saint Petersburg from Swedish attacks. Over subsequent centuries, the fortification was modernized with advanced weaponry while maintaining its core defensive purpose.

The name "Shanz" comes from the German Schanze, a field fortification, and survives in the paired names Alexander-Shanz and Nikolai-Shanz. In summer 2014 the fort and the nearby beach served as a filming location for the war film "Batalon". Today the site lies within the Zapadny Kotlin nature reserve, and bus 2Kr terminates here.

The fort is accessible via the Kronstadt highway with regular bus service from Saint Petersburg to the western end of Kotlin Island. Wear sturdy shoes as paths are unpaved and the terrain around the fortifications is uneven.

The fort's name comes from the Russian word for a field redoubt, shanets. The 1897 concrete batteries were built to designs already used for forts A and B, adapted to local ground. On the gun battery four extra guns were mounted to repel possible enemy landings, and a searchlight on the right flank could be lowered into a shaft.