Tissot SA is a Swiss luxury watchmaker. The company was founded in Le Locle, Switzerland by Charles-Félicien Tissot and his son, Charles-Émile Tissot, in 1853. After several mergers and name changes, the group which Tissot SA belonged to was renamed the Swatch Group in 1998. Tissot is not associated with Mathey-Tissot, another Swiss watchmaking firm.
Tissot merged with watch company Omega SA in 1930, forming SSIH (Société Suisse pour l'Industrie Horlogère), and Tissot-Omega watches from this era are sought after by collectors.
Tissot's first engagement as an official timekeeper was in 1938 where they timed a series of ski races in Villars-sur-Ollon, near the company's home town in the Jura mountains. Tissot was used for timing downhill skiing in Switzerland in 1938, and for the Davis Cup in 1957.
SSIH-ASUAG was formed in 1983 (Allgemeine Schweizerische Uhrenindustrie Aktiengesellschaft, ASUAG, was a holding company supplying the watch industry),then SMH (Société Suisse de Microélectronique et d’horlogerie; 1983–1985).