希蒂环礁是南太平洋法属波利尼西亚的环礁，属于土阿莫土群岛的一部分，位于马凯莫环礁西南19公里，长9公里、宽6公里，土地面积3平方公里，潟湖面积15平方公里，岛上无人居住。

• Tuamotu reed-warbler
• Polynesian Ground Dove
• Atoll names
• Atoll list (in French)

Hiti, or Hiti-rau-mea, is a small atoll of the Tuamotu Archipelago in French Polynesia. It is located 19 km southwest of Makemo Atoll.

Hiti Atoll is oval in shape. It measures 9 km in length with a maximum width of 6 km. There are some narrow islands on the northern side of its reef with a total land area of about 3 km. The southern part of the reef is broader but has no islands. Hiti's lagoon is not connected to the ocean by a pass.