Dellstedter Birkwildmoor, Protected area in Schleswig-Holstein, Germany.

The Dellstedter Birkwildmoor is a protected reserve in Schleswig-Holstein consisting of two large bog areas called Nordermoor and Ostermoor spread across roughly 620 hectares. Beneath the moorland surface lie thick peat layers several meters deep that form the foundation of this landscape.

The area was drained around 250 years ago to extract peat for fuel, and in 1843 a merchant named Marcus Hartwig Holler purchased a large portion for peat and iron extraction. This early exploitation shaped the moorland and influenced later conservation efforts.

The name Birkwildmoor refers to the black grouse, once numerous here but gone as a breeding bird since the early 1980s. Since about 1970 ditches have been closed to hold water, and a herd of moorland sheep grazes the bog to push back purple moor grass. The reserve was named Schleswig-Holstein's nature reserve of the year in 2009.

A roughly 4.5-kilometer circular trail leads through the Nordermoor section, allowing visitors to walk through the moorland on foot. An observation tower along the route provides wide views across the landscape and makes it easier to spot wildlife.

The moor is named after the black grouse, once present here in very large populations; it has been gone as a breeding bird since the early 1980s. In 2009 the reserve was named Nature Reserve of the Year in Schleswig-Holstein. A herd of moorland sheep grazes the area to hold back purple moor grass.