Hellikon (Alemannic German pronunciation: [ˈhɛlːikχə]) is a municipality in the Rheinfelden district of canton Aargau in Switzerland.

The Hellikon village lies in the upper reaches of the Möhlin valley (Möhlintal) through which flows the Möhlinbach in a Northwesterly direction towards the Rhine.

The village is bordered on both sides by the hills of the Tabel Jura (Tafeljura) which have very steep lower slopes leading to flat upper plateau's that are intensively farmed.

Neighbouring villages in Kanton Aargau are Zuzgen to the Northwest, Obermumpf to the Northeast, Schupfart to the East and Wegenstetten to the Southeast.

[4] The low jurisdiction was in the possession of the Hofes Zeiningen, which in turn were affiliated to the Stift Säckingen.

Following the country reforms of the Austrian King Maximilian I. Hellikon fell under the authority of "Further Austria" in 1491.

During the Rappenkrieg, a peasant uprising that lasted from 1612 until 1614 and the Thirty Years' War (1633 to 1638) the villages economic development went into decline.

On 20 February 1802 Rheinfelden was made a district capital of the newly created Canton of Fricktal, (Principality of Frickgau), joining the Helvetic Republic in August.

Hellikon transformed from a farming to a commuter community with ever more people moving from the Basel region.

The blazon of the municipal flags describes "Over blue, a green triple hill and three yellow morels".

[8] The historical population is given in the following table:[12] From the 2000 census[update], 389 or 52.1% were Roman Catholic, while 110 or 14.7% belonged to the Swiss Reformed Church.

Hellikon lies on the unclassified road running along the Möhlintal from Möhlin to Wegenstetten.

Connection with the public transport network is through the Postauto bus route in either the direction of Möhlin or Weggenstetten.

The entire village of Hellikon is designated as part of the Inventory of Swiss Heritage Sites.

Middle and Secondary schools are located in Möhlin and shared by the entire Möhlintal.

Thanks to an inter-cantonal agreement, youngsters from the Fricktal may attend the college in Muttenz (canton Baselland).