塞拉岛是瑞典的岛屿，位于该国中东部梅拉伦湖，由斯特兰奈斯市负责管辖，面积95平方公里，是该国最大的湖岛，与大陆相连的大桥启用于二十世纪，人口约3,000。

Selaön is the largest island in Mälaren, Sweden, and covers 95 km². It is located at Stallarholmen, east of Strängnäs, and it has about 3,000 permanent residents. It is connected by a bridge to the mainland. It is the largest island in any lake in Sweden.