Aeschlen bei Oberdiessbach (officially known as Aeschlen) was a municipality in the district of Konolfingen in the canton of Bern in Switzerland. On 1 January 2010 the municipality of Aeschlen merged into the municipality of Oberdiessbach.

Aeschlen is first mentioned in 1303 as Eschlon.

Aeschlen had an area of 4.9 km (1.9 sq mi). Of this area, 60.2% is used for agricultural purposes, while 35.9% is forested. The rest of the land, (3.9%) is settled.

Aeschlen has a population (as of 31 December 2020) of 305. As of 2007, 1.6% of the population was made up of foreign nationals. Over the last 10 years the population has decreased at a rate of -7.3%. Most of the population (as of 2000) speaks German (97.5%), with Albanian being second most common ( 1.9%) and Serbo-Croatian being third ( 0.6%).

The age distribution of the population (as of 2000) is children and teenagers (0–19 years old) make up 28.7% of the population, while adults (20–64 years old) make up 59.3% and seniors (over 64 years old) make up 12%. In Aeschlen about 64.4% of the population (between age 25–64) have completed either non-mandatory upper secondary education or additional higher education (either University or a Fachhochschule).

Aeschlen has an unemployment rate of 1.3%. As of 2005, there were 72 people employed in the primary economic sector and about 20 businesses involved in this sector. 13 people are employed in the secondary sector and there are 5 businesses in this sector. 30 people are employed in the tertiary sector, with 9 businesses in this sector. The historical population is given in the following table:

year	population
1764	204
1850	455
1900	348
1950	321
1970	244
2000	317

• Aeschlen in German, French and Italian in the online Historical Dictionary of Switzerland.