Berneck is a municipality in the Wahlkreis (constituency) of Rheintal in the canton of St. Gallen in Switzerland.

[3] The blazon of the municipal coat of arms is Or a Vine Vert fructed Azure issuant from base of the second and twined around a stake Gules that is held by a Bear rampant Sable langued armed and in his virility of the third.

The presence of a bear (German: Bär and also the root of Bern) is a weak example of canting, where a symbol on the coat of arms forms a visual pun or rebus.

Of the rest of the land, 20.3% is settled (buildings or roads) and the remainder (0.5%) is non-productive (rivers or lakes).

It consists of the village of Berneck and the hamlets of Kobel, Rüden, Taa, Husen, Hinterburg and Buechholz.

Of the foreign population, (as of 2000[update]), 60 are from Germany, 114 are from Italy, 190 are from ex-Yugoslavia, 72 are from Austria, 15 are from Turkey, and 38 are from another country.

[8] The age distribution, as of 2000[update], in Berneck is; 394 children or 12.0% of the population are between 0 and 9 years old and 505 teenagers or 15.4% are between 10 and 19.

[11] From the 2000 census[update], 1,627 or 49.5% are Roman Catholic, while 1,109 or 33.7% belonged to the Swiss Reformed Church.

The second is the Schlosslandschaft Ober/Unterrheintal, a concentration of castles that spans Altstätten, Balgach, Berneck and Marbach.