Mosebacke, Park in Södermalm, Stockholm, Sweden

Mosebacke is a square and park on Katarinaberget in Södermalm, a block from Götgatan. Its oval centre is edged by a cast-iron railing designed by Bengt Inge Lundkvist, repeating a motif of a woman under a tree. Inside stands Nils Sjögren's white marble fountain sculpture Systrarna, raised in 1945, and the grounds were reshaped in 1941.

The square and the Mosebacke neighbourhood were created after a fire in 1857 burned many buildings to the ground; part of the burnt area became the new square. The park's first plantings date from 1852–1853, making them among Stockholm's earliest public plantings, and it was remodelled in 1941 into its present form. Södra Teatern, rebuilt after the fire to designs by Johan Fredrik Åbom, opened in 1859.

Södra teatern, Stockholm's oldest private theater, sits within the park grounds and shapes the space through regular performances and events since opening in 1859. The venue draws people who come to experience shows and watch the activity that gathers around it.

The square sits on Katarinaberget, one block from Götgatan, and Hökens gata is one of the sloping streets linking it to Götgatan. In the park's southwest corner, only a ventilation pipe on the lawn, an air grille and a shelter sign on the wall by Svartensgatan reveal the entrance to the Katarinaberget air-raid shelter. The terrace is reached through a portal beside Södra Teatern.

The elevated location gives visitors clear views across the center and waterways of the city, making it popular for photography. Many people come specifically to capture these sights.