The Lillesand–Flaksvand Line (Norwegian: Lillesand–Flaksvandbanen) or LFB was a 16.59-kilometer (10.31 mi) railway between Flaksvand (now called Flaksvatn) and Lillesand in Agder, Norway.

The private line was built with 1,067 mm (3 ft 6 in) narrow gauge and was not connected to the national railway network.

The line had four stations and four halts, and was served with two 75 kilowatts (100 hp) steam locomotives, Lillesand and Flaksvand.

The line was owned and operated by the private company, A/S Lillesand–Flaksvandbanen, although nearly all the shares were held by local municipalities, the county and the national government.

Extra tracks were laid at Storemyr for parking of wagons and at Ydderstad, there was a spur to load lumber.

North of Tveite, there was a spur to leave part of the train if the locomotive needed to take two trips to get up the hill.

[4] Public debate about constructing a railway from Lillesand up the valley following the river Tovdalselva started in the mid-1880s.

Costs were estimated at NOK 462,000 and the line was passed by the Parliament of Norway on 22 June 1891.

Aust-Agder County Municipality also gave a grant of NOK 20,000, and bought shares for the same amount.

[7] Concession was granted by royal resolution on 31 August 1892, and lasted 30 years from the date of the opening of the railway.

[5] Two steam locomotives from Sächsische Maschinenfabrik were delivered in May 1895 and given the names Lillesand and Flaksvand.

[10] Other proposals involved extending the line from Flaksvand to Vennesla and from Lillesand to Roresand.