Adelboden is first mentioned in 1409 as in valle Adelboden. In 1453 it was mentioned as Adelboden alias silva.
The alps Engstligenalp and Silleren belonging to Adelboden are mentioned for the first time in the 13th century. The inhabitants of Engstligental are called forest people. In the 15th century Adelboden got its own church and there were over 50 house fathers vouching for the salary of the minister.
In the 16th century Adelboden joined the Reformation, the Catholic minister fled over the Hahnenmoospass to the Catholic Canton of Fribourg.
Up to the 19th century, the only way to Frutigen was high on the south slope of the Engstligen valley and often impassable in winter. In the late 19th century a road along the Engstligen river was built joining Adelboden to the rest of the world.
In the 1870s the first boarding house was opened by one of the local teachers. It developed into a hotel, which is still in the possession of the same family (hotel Hari im Schlegeli). Around the turn of the century tourism led to a big increase in the population.
Adelboden was the destination of the first packaged winter sports holidays (vacations), organised by Sir Henry Lunn in 1903.
Into the 1930s the aerial ropeway to the Engstligenalp was built with further ropeways following. The Silleren area was up into the 1980s accessible by buses
