Rongerik Atoll or Rongdrik Atoll (Marshallese: Ron̄dik, [rʷɔŋʷ(o͡e)r̪ʲi͡ɯk]) is a coral atoll of 17 islands in the Pacific Ocean, and is located in the Ralik Chain of the Marshall Islands, approximately 200 kilometres (120 mi) east of Bikini Atoll. Its total land area is only 1.68 square kilometres (0.65 sq mi), but it encloses a lagoon of 144 square kilometres (56 sq mi).