Interlaken is a town and municipality in the Interlaken-Oberhasli administrative district in the Swiss canton of Bern. It is an important and well-known tourist destination in the Bernese Oberland region of the Swiss Alps, and the main transport gateway to the mountains and lakes of that region.

The town is located on the Bödeli, between Lake Thun and Lake Brienz, and alongside the Aare river that flows between the two lakes. Transport routes to the east and west alongside the lakes are complemented by a route south into the mountains following the Lütschine river