Campbell Bay National Park, National park in Great Nicobar Island, India

Campbell Bay National Park covers about 426 km2 on Great Nicobar, the largest of the Nicobar Islands, roughly 190 km north of Sumatra. It was gazetted as a national park in 1992 and forms part of the Great Nicobar Biosphere Reserve. A 12-km-wide forest buffer zone separates it from the smaller Galathea National Park. The climate is warm and humid.

Campbell Bay National Park was gazetted as a national park of India in 1992. It forms part of the Great Nicobar Biosphere Reserve. The park covers about 426 km² and is separated from the smaller Galathea National Park by a 12-km wide forest buffer zone.

The park lies within the Great Nicobar Biosphere Reserve, and its name comes from Campbell Bay, the settlement on the island's east coast. Access is controlled, so the forest is visited mainly by researchers and officials rather than tourists; nature walks and bird watching are the activities the park is known for.

Visitors need special permits from the Forest Department before entering the park. Ferry services from Port Blair provide access, though travel times are lengthy due to the remote island location.

Rare megapode birds live in the park and build unusual mounds from leaves and soil to incubate their eggs using heat. This breeding method is quite different from how most other bird species reproduce.