Jökulsárlón is the largest glacier lagoon or lake in Iceland.

Situated in south eastern Iceland, at the head of the Breiðamerkurjökull glacier branching from the Vatnajökull, between Skaftafell National Park and Höfn, it evolved into a lagoon after the glacier started receding from the edge of the Atlantic Ocean. The lake has grown since then at varying rates because of melting of the Icelandic glaciers. The lagoon now stands 1.5 kilometres away from the ocean's edge and covers an area of about 18 km2. It is the second deepest lake in Iceland at over 200 metres depth. The size of the lagoon has increased fourfold since the 1970s. It is considered as one of the natural wonders of Iceland.

The lagoon can be seen along Route 1 between Höfn and Skaftafell. It presents a picturesque parade termed as “A ghostly procession of luminous blue icebergs through the 17 km2 Jokulsarlon Lagoon”. A boat ride of about 40 minutes in a broad bottomed boat, winding through the floating small icebergs of the lagoon, provides an enchanting experience.