Leissigen (German pronunciation: [ˈlaɪsɪɡn̩]) is a municipality in the Interlaken-Oberhasli administrative district in the canton of Bern in Switzerland.

The name Leissigen comes from the Old High German personal name Lantgis and the toponymic suffix -ingun, meaning "of the people of Langtis."

[3] The oldest traces of a settlement in the area are scattered Bronze Age axes, daggers and swords.

The first time the village appears in the historic record, during the Middle Ages, it belonged to the Herrschaft of Unspunnen-Rotenfluh.

In 1528, the city of Bern adopted the new faith of the Protestant Reformation and began imposing it on the Bernese Oberland.

Lauterbrunnen joined many other villages and the monastery in an unsuccessful rebellion against the new faith.

Many of the villagers were fishermen or boat builders while others farmed the narrow margin between the lake and the mountains.

That began to change in 1780 when a spa was built around mineral springs on the lake shore.

In 1887 a dock was built for the steam ships which transported people and goods across the lake.

About two-thirds of the working population commute to jobs in nearby Interlaken or to the city of Bern.

[6] The blazon of the municipal coat of arms is Gules two Fishes embowed in pale combattant.

[10] Most of the population (as of 2000[update]) speaks German (841 or 93.7%) as their first language, Albanian is the second most common (16 or 1.8%) and French is the third (11 or 1.2%).

The number of jobs in the primary sector was 11, of which 8 were in agriculture, 1 was in forestry or lumber production and 1 was in fishing or fisheries.

In the tertiary sector; 9 or 7.4% were in wholesale or retail sales or the repair of motor vehicles, 5 or 4.1% were in the movement and storage of goods, 37 or 30.3% were in a hotel or restaurant, 4 or 3.3% were in the information industry, 5 or 4.1% were technical professionals or scientists, 7 or 5.7% were in education and 47 or 38.5% were in health care.

[10] From the 2000 census[update], 82 or 9.1% were Roman Catholic, while 652 or 72.6% belonged to the Swiss Reformed Church.

It formerly had rail service at Leissigen railway station on Lake Thun line.

This is followed by three years of obligatory lower Secondary school where the students are separated according to ability and aptitude.

Following the lower Secondary students may attend additional schooling or they may enter an apprenticeship.