Lumparland is a municipality located in Åland, which is an autonomous territory of Finland. It holds the distinction of being the smallest municipality on mainland Åland.
The municipality covers a total area of 87.04 square kilometres (33.61 sq mi), with water accounting for 50.8 km2 (19.6 sq mi) of that landmass. It has a population of 371 people, resulting in a population density of 10.21 inhabitants per square kilometre (26.4/sq mi). Lumparland is unilingually Swedish.