Thal is a village and municipality in the Wahlkreis (constituency) of Rorschach in the canton of St. Gallen in Switzerland. Besides the village of Thal itself, the municipality also includes the villages of Altenrhein, Buechen, Buriet and Staad.

St. Gallen–Altenrhein Airport is a small airport in Altenrhein in the Canton of St. Gallen, Switzerland, near Lake Constance. It is the home base for People's.