Lillesand is a town and municipality in Aust-Agder county, Norway. It is part of the traditional district of Sørlandet. The administrative center of the municipality is the town of Lillesand.
The town of Lillesand was established as a municipality on 1 January 1838 (see formannskapsdistrikt). On 1 January 1962, the rural municipalities of Høvåg (population: 1,330) and Vestre Moland (population: 2,454), the Gitmarkgårdene area of Eide (population: 22), and the town of Lillesand (population: 1,041) were merged together to form a new, enlarged municipality of Lillesand.