Errinundra National Park, Nature reserve in East Gippsland, Australia.

Errinundra National Park is a nature reserve in East Gippsland featuring large stands of cool temperate rainforest mixed with tall eucalyptus trees. The landscape is shaped by dense vegetation and the endemic Errinundra Shining Gum, a rare species found nowhere else.

The park was established on 21 June 1988. Logging had already cleared large areas of the surrounding forest before that date, including parts of Brown Mountain forest, and administrative errors later led to some logging inside the park boundaries. The plateau itself is a southern extension of the Monaro Tablelands.

The park lies on the Errinundra Plateau, a southern extension of the Monaro Tablelands of New South Wales. Its forests are the largest remaining cool temperate rainforest in Victoria, and logging of surrounding forest types, including Brown Mountain forest, has continued around the park's edges.

Unsealed roads become impassable during winter due to rain and snow, so the park is best visited during dry months. Plan walks ahead and check weather conditions before heading into the forest.

The park protects the largest remaining cool temperate rainforest in Victoria, and logging has occurred inside its boundaries because of administrative errors. Brown Mountain forest, just outside the park, was also logged.