Whirinaki Forest Park is a publicly accessible forest park in the North Island of New Zealand. The park is centered around the town of Minginui and part of the eastern boundary flanks the Urewera National Park.
The Department of Conservation is responsible for administering the park. Tramping is a popular recreation in the park and there is a network of tracks and huts that are now used for this purpose.
The unsealed River Road provides access to a carpark and the starting point of many walks. Short walks lead through native bush to Waiatiu Falls, Arohaki Lagoon, Te Whaiti-Nui-A-Toi Canyon, and Whirinaki Falls, respectively. The rain-fed Arohaki Lagoon is often alive with Southern Bell Frogs. Longer tramping tracks connect several huts and two other access roads.
The forests were a focus of protests over logging in the 1970s and 80s. Today, large parts of the park remain covered in native podocarp forest featuring rimu, totara, kahikatea, matai and miro. Some higher parts contain beech forest. The forest supports a wide range of birds, some of which are endangered.