奥罗纳环礁是太平洋岛国基里巴斯的环礁，属于凤凰群岛的一部分，距离曼拉岛96公里，长8.8公里、宽4公里，土地面积3.9平方公里，潟湖面积25平方公里。

• Oceandots article with satellite photo
• Jane Resture page, with links to 1967 photos
• US-Kiribati Treaty of Friendship

Orona atoll, also known as Hull Island, is one of the Phoenix Islands in the Republic of Kiribati. It measures approximately 8.8 km (5 mi) by 4 km (2 mi), and like Kanton, is a narrow ribbon of land surrounding a sizable lagoon with depths of 15–20 metres (49–66 ft). Numerous passages connect the lagoon to the surrounding ocean, only a couple of which will admit even a small boat. Total land area is 3.9 km (2 sq mi), and the maximum elevation is nine metres.