埃内韦塔克环礁（英语：Enewetak Atoll）是西太平洋中一个由40个岛屿组成的环礁，属于拉利克礁链的一部分。该岛群是马绍尔群岛24个立法选区（legislative district）之一，位于比基尼环礁以西305公里，是拉利克礁链的最西端岛屿，总土地面积少于5.85平方公里，中央的潟湖湖岸线长度80公里，1998年统计时的人口为853人。马绍尔群岛在第二次世界大战结束后直至1986年独立间一直受美国管治，1948年至1958年期间美国在埃内韦塔克环礁附近进行43次核爆测试，并在1952年11月1日进行的第一次氢弹测试中，把伊鲁吉拉伯岛炸毁。

Enewetak Atoll (or Eniwetok Atoll, sometimes also spelled Eniewetok; Marshallese:Ānewetak, [æ̯ænʲee̯ɔ̯ɔ͡ɛɛ̯dˠɑk], or Āne-wātak, [æ̯ænʲee̯-ɒ̯ɒ͡ææ̯dˠɑk]) is a large coral atoll of 40 islands in the Pacific Ocean and with its 850 people forms a legislative district of the Ralik Chain of the Marshall Islands. With a land area total less than 5.85 square kilometres (2.26 sq mi), it s not higher than 5 metres and surrounds a deep central lagoon, 80 kilometres (50 mi) in circumference. It is the second-westernmost atoll of the Ralik Chain and is 305 kilometres (190 mi) west from Bikini Atoll. The U.S. government referred to the atoll as "Eniwetok" until 1974, when it changed its official spelling to "Enewetak" (along with many other Marshall Islands place names, to more properly reflect their pronunciation by the Marshall Islanders). In 1977–1980, a concrete dome was built on Runit Island to deposit radioactive soil and debris.