海卢奥托岛是芬兰的岛屿，位于波的尼亚湾，由北博滕区负责管辖，面积202.26平方公里，主要经济活动有服务业、工业、农业和渔业，2012年人口1,002。

Hailuoto (Swedish:Karlö) is an island and a municipality in Northern Ostrobothnia region, Finland. The population of Hailuoto is 1,001 (June 30, 2015) and the municipality covers an area of 200.53 km (77.43 sq mi) (excluding sea areas) of which 1.70 km (0.66 sq mi) is inland water (January 1, 2011). The population density is 4.99/km (12.9/sq mi).