Phenix Watch Co was a Swiss watch brand active in the middle of the 20th century.
Phenix was founded in Porrentruy. The company produced watches under the Phenix, Eros, and Argus brands. The brand was incorporated into the MSR in 1961 with Paul Aeschenbacher serving as Director. It had relocated to La Chaux-de-Fonds by 1966. The brand was retired after 1980.