Hardtwaldstadion, Association football stadium in Sandhausen, Germany

Hardtwaldstadion is a football stadium in Sandhausen, owned by SV Sandhausen and bordered by the Schwetzinger Hardt forest. Its single-tier covered main stand, built in 1987/88, has a flat roof on thin supports, a dark band of windows above the seating deck, and pale metal railings dividing the rows. White advertising boards line the front, including panels reading "HALLO" in red. Capacity is 15,300.

The stadium opened in 1951 with a basic dirt surface that was replaced with grass in 1961. Major expansions followed, particularly after promotion to the third division in 2008 and second division in 2012, when new stands and facilities were added to meet league requirements.

The name comes from the adjacent Hardtwald, the northernmost part of the Hardtwald forest on Sandhausen's southern edge. The club owns the ground, and the stand built in 1987/88 holds a small flat used to put up trial players overnight. On 27 August 1995 Sandhausen beat VfB Stuttgart 13:12 on penalties in the DFB-Pokal first round, the longest shootout in the competition's history.

The ground sits at the southern exit of Sandhausen, on the edge of the Schwetzinger Hardt. The main stand, built in 1987/88, holds the press rooms, board offices and sanitary facilities, plus a small flat used to put up trial players overnight. The BusinessTurm added in 2016 can be hired as an event venue on non-match days.

On 27 August 1995, Sandhausen beat Bundesliga side VfB Stuttgart 13:12 on penalties in the first round of the DFB-Pokal, the longest shootout in the competition's history. The main stand also holds a small flat used to put up trial players overnight.