Collundspark, Park in Duburg district, Flensburg, Germany.

Collundspark is a park in the Duburg district on a slope above Flensburg's city center, located at the intersection of Schlossstrasse and Duburger Strasse. Multiple paths connect these two streets through the green space.

The park was probably laid out in the Baroque period and is said to have covered around 15 hectares. South of it lay the Schlosspark of the decayed Duburg castle. In the 1840s it served as a summer garden restaurant; the Collundtsche Gartenlaube there closed in 1888. The Lorenzen Collundt family of shipowners owned the site until 1920, and in 1991/92 the remaining 0.8 hectares were redesigned as ecological urban renewal.

The park's name comes from the Lorenzen Collundt family of shipowners and captains, who owned the grounds until 1920. The artificial ruin was created during the 1991/92 ecological urban renewal, when roughly century-old foundations and cellar remains were reshaped to evoke a castle ruin.

The park is accessible via several marked paths that were improved during renovation work between 2007 and 2008. Because of the sloped terrain, some paths are steeper than others, so appropriate footwear is helpful.

The site once housed the Collundtsche Gartenlaube, a restaurant that operated until 1888. Later it served as the location of the Viktoria bread factory during World War I.