Arno Atoll

Arno Atoll is an atoll of 133 islands in the Pacific Ocean. It is a legislative district of the Marshall Islands. Its land area is only 5 mi² (13 km²). Unlike most other atolls, Arno encloses three different lagoons, a large central one, and two smaller ones in the north and east. Its main lagoon encloses an area of 130.77 mi² (339 km²).

The population of the islands in the atoll was 2069 as of the 1999 census. The most populous islands are Ajeltokrok, Kobjeltak, Rearlaplap, Langor and Tutu. At a distance of only 20 km, it is the closest atoll to the Marshall Islands capital, Majuro Atoll, and can be seen looking east from Majuro on a clear day. The largest village is Ine, Arno.

People of Arno are well known for their productivity in making copra (the dried out meat of coconuts, from which coconut oil is extracted). Arno women are renowned for their production of the Kili Bag, a popular handwoven handbag/purse, named after another island in the Marshall Islands (to which the people of Bikini were eventually relocated as a result of the US nuclear tests that were conducted on their home atoll). Arno supposedly had a traditional "love school".