Kwajalein Atoll (Marshallese: Kuwajleen IPA: [kʷuwːɔ͡ɛt̪ʲl̪ʲɪn̪ʲ]; common English pronunciation IPA: /ˈkwɑːʤəlɨn/, often nickname Kwaj, pronounced //ˈkwɑːʤ// by English-speaking residents of the U.S. facilities) is part of the Republic of the Marshall Islands (RMI). The southernmost and largest island in the atoll is named Kwajalein Island.