大卡伊岛是印度尼西亚马鲁古省的岛屿，属于卡伊群岛的一部分，座标5°58′0″S 133°58′58″E / 5.96667°S 133.98278°E / -5.96667; 133.98278，西面有小卡伊岛，面积550平方公里，是群岛中面积第二大的岛屿，岛上最高点海拔900米。

Kai Besar (Great Kai Island, also Nuhu Yuut or Nusteen) is one of the Kai Islands which are part of the Maluku Islands, Indonesia. Its area is 550 km (340 mi) . The other main island in the Kai Islands group is Kai Kecil (Little Kai Island). The northern tip is called Tanjung Borang, and southern tip called Tanjung Weduar.