Iseltwald is a village and municipality on the southern shore of Lake Brienz in the Bernese Oberland region of Switzerland.

Politically, the municipality is located in the Interlaken-Oberhasli administrative district of the canton of Bern.

[4] During the Middle Ages, a castle was built on the peninsula near the village for the Lords of Matten.

In 1146, King Conrad III gave Interlaken Monastery one quarter of the village.

After the Swiss Confederation gained de facto independence from the House of Habsburg, the monastery remained a strong supporter of the Austrian dynasty.

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

Today the local economy is based on tourism, agriculture, fishing and timber harvesting.

[4] The village of Iseltwalt lies on a delta at the south bank of Lake Brienz.

Besides the village of Iseltwald, the municipality includes the hamlets of Furen, Sengg and Isch, as well as a number of scattered farm houses.

[7] The blazon of the municipal coat of arms is Or an Ibex passant per pale Sable and Argent.

[11] Most of the population (as of 2000[update]) speaks German (422 or 97.2%) as their first language, French is the second most common (3 or 0.7%) and Italian is the third (3 or 0.7%).

The historical population is given in the following chart:[4][14] The entire village of Iseltwald is designated as part of the Inventory of Swiss Heritage Sites.

In the tertiary sector; 61 or 39.1% were in a hotel or restaurant, 2 or 1.3% were in the information industry, 6 or 3.8% were in education and 81 or 51.9% were in health care.

[11] From the 2000 census[update], 38 or 8.8% were Roman Catholic, while 318 or 73.3% belonged to the Swiss Reformed Church.

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.

[18] For a long time, the only access to the village was through a small regional road or by ferry.

[23] In the South Korean drama "Crash Landing on You", Iseltwald was the setting for scenes of the main character Ri Jeong Hyeok attending music school in Switzerland as a pianist when he became aware of his older brother's death prior to the beginning of the series.