Rynningeviken, Nature reserve in Örebro Municipality, Sweden.

Rynningeviken is a nature reserve just north of the Svartån river where it flows into Lake Hjälmaren, east of Örebro. It holds flood meadows, grazing pastures, old-growth shoreline forest and shallow reed bays. In the south, the Water Park has hills, ponds and walking paths, with Naturens hus at its centre.

The southern part of Rynningeviken was Örebro's oil harbour, with oil tanks and factory buildings; the last tanker called in 1969. From 1976 to 1992 the area, then called Venafältet, formed part of the Klockarängens shooting range of the Livregementets grenadjärer regiment. After military training ended, Örebro municipality bought the land to create a recreation area, and the nature reserve was established in 1995.

The place hosts different outdoor activities that change with the seasons. Winter visitors glide across frozen waters on skates, while warmer months draw people for walks and observing nature.

The reserve sits about three kilometers from Örebro city center and is accessible via maintained trails. Observation points are available, and a facility called Naturens hus provides rest and refreshment options.

The southern Water Park occupies the site of Örebro's old oil harbour, where the last tanker docked in 1969. From 1976 to 1992 the area, then called Venafältet, formed part of the Klockarängens shooting range of the Livregementets grenadjärer regiment. Hay from Garphyttan National Park and Latorpsängarna was moved here to seed the ground, and over 200 plant species now grow in the park.