Gams is a municipality in the Wahlkreis (constituency) of Werdenberg in the canton of St. Gallen in Switzerland.
Gams is first mentioned in 835 as Campesias. In 1210 it was mentioned as Chames, in 1236 as Gamps. Until the Middle Ages it was a Romansh village and was known in Romansh as Chiamp.
Gams has an area, as of 2006, of 22.3 km2 (8.6 sq mi). Of this area, 59.7% is used for agricultural purposes, while 30.3% is forested. Of the rest of the land, 6.8% is settled (buildings or roads) and the remainder (3.3%) is non-productive (rivers or lakes).
The municipality is located in the Werdenberg Wahlkreis, at the foot of the Alpstein sub-range of the Appenzell Alps and on the edge of the Rhine valley. It sits at the eastern entrance into the Toggenburg as well as the footpath over the Saxerlücke to Appenzell and St. Gallen. Additionally, it was on the most important trade route between Chur-Sargans-Lake Constance and was the starting point of the pilgrimage routes to Einsiedeln and Rankweil. It consists of the village of Gams with its surrounding settlements and the village of Gasenzen.
Gams may be: