Tikehau is a coral atoll in the Palliser Islands group, part of the Tuamotu Archipelago in French Polynesia. It is included in the commune of Rangiroa. Tikehau is located 210 miles northeast of Tahiti. The nearest atoll, Rangiroa, lies only 7.5 miles to the east. The atoll's oval-shaped lagoon is 17 miles long and 12 miles wide with a lagoon area of about 178 square miles. The atoll is made up of two major islands and numerous islets.
The whole atoll is surrounded by an almost continuous coral reef. There is a single pass Tuheiava Pass, located on the western shore. The islands and islets are covered with coconut palms. The main village is called Tuherahera. Jacques Cousteau's discovered that it contains a greater variety of fish species than any other place in French Polynesia.