Niuean may refer to:
- Something of, from, or related to Niue, an island nation located in the South Pacific Ocean
- A person from Niue, or of Niuean descent. For information about the Niuean people, see Demographics of Niue and Culture of Niue. For specific persons, see List of Niueans.
- The Niuean language. See also Languages of Niue.
- Niuean cuisine