Tahitian could refer to
- Something of, from, or related to the island of Tahiti and the other Society Islands.
- Tahitian people or Tahitians, people with an indigenous Tahitian or ethnic identity.
- A resident of Tahiti, regardless of ancestry. For information about the people of Tahiti
- Demographics of Tahiti
- Demographics of French Polynesia
- Culture of Tahiti
- A resident or citizen of the 19th-century Kingdom of Tahiti
- The Tahitian language, a Eastern Polynesian language, the main language of the Society Islands, used as a lingua franca throughout much of French Polynesia.