Spiekeroog is an East Frisian Island located off the North Sea coast of Germany. It is situated between the islands of Langeoog to the west and Wangerooge to the east, within the district of Wittmund in the state of Lower Saxony.
The island features a single village, which shares the name Spiekeroog. It is notably part of the UNESCO Wadden Sea World Heritage Site and the Lower Saxon Wadden Sea National Park.