Zeiningen is a municipality in the district of Rheinfelden in the canton of Aargau in Switzerland.

Zeiningen has an area, as of 2009[update], of 11.37 square kilometers (4.39 sq mi).

[3] Ägelsee is a small lake and nature preserve located in the municipality.

The blazon of the municipal coat of arms is Or a Vine-tree Vert fructed Azure staked proper issuant from Coupeaux of the second.

[7] The age distribution, as of 2008[update], in Zeiningen is; 234 children or 10.6% of the population are between 0 and 9 years old and 251 teenagers or 11.4% are between 10 and 19.

In the federal election, a total of 649 votes were cast, and the voter turnout was 41.5%.

[11] The historical population is given in the following table:[8] Möhliner field, a rich collection of prehistoric items, is listed as a Swiss heritage site of national significance.

[7] From the 2000 census[update], 975 or 54.3% were Roman Catholic, while 417 or 23.2% belonged to the Swiss Reformed Church.