Bettwil (German pronunciation: [ˈbɛtˌviːl]) is a municipality in the district of Muri in the canton of Aargau in Switzerland.

The first traces of human settlement are some scattered, Roman era artifacts.

The current municipal borders were set in 1415 when it came under Swiss Confederation control.

In 1988, a regional bus connection was established, and by 1990, 61% of the working population commuted outside the municipality.

[4] The municipality is located in the Muri district, on the western slope of the Lindenberg.

It consists of the linear village of Bettwil and the hamlets of Brandholz, Guggibad and Königsberg.

The blazon of the municipal coat of arms is Argent three Pine-trees Vert trunked Gules issuant from Coupeaux of the second.

[8] The age distribution, as of 2008[update], in Bettwil is; 52 children or 9.3% of the population are between 0 and 9 years old and 84 teenagers or 15.0% are between 10 and 19.

[10] About 58.5% of the total households were owner occupied, or in other words did not pay rent (though they may have a mortgage or a rent-to-own agreement).

[8] From the 2000 census[update], 389 or 67.5% were Roman Catholic, while 122 or 21.2% belonged to the Swiss Reformed Church.