Omelek Island (/ˈoʊməlɛk/; Marshallese: Kom̧le, pronounced [kʷo͡ɤmˠ(ɤ͡e)lʲee̯]) is part of the Kwajalein Atoll in the Republic of the Marshall Islands. It is controlled by the United States military under a long-term lease (along with ten other islands in the atoll) and is part of the Ronald Reagan Ballistic Missile Defense Test Site.