Gambier is a commune of French Polynesia in the administrative subdivision of the Tuamotu-Gambier Islands. The commune includes the Gambier Islands as well as several atolls in the Tuamotu Archipelago. All the Tuamotu atolls belonging to the commune are uninhabited except for Marutea Sud, and are sometimes mistakenly included among the Gambier Islands themselves. The commune population was 1,570 at the 2022 census. Its total land area is 45.97 km2.