Lolland (Danish: [ˈlʌˌlænˀ] ⓘ; formerly spelled Laaland, literally "low land") is the fourth largest island of Denmark, with an area of 1,243 km2 (480 sq mi).

The locality of Sundby forms a cross-island urban area with Nykøbing Falster, the largest conurbation partially on Lolland.

Route E47 from Copenhagen crosses the Guldborgsund strait between Lolland and Falster via a modern tunnel, but the motorway currently terminates at Rødbyhavn where a ferry carries vehicles to Fehmarn.

It is among the most authentic reconstructions of the medieval period in Europe, and holds both the largest and the oldest trebuchets in the world.

Lolland has many sandy beaches and areas with summer houses, which are primarily visited by German tourists.