Sarah DeRemer Knauss (née "Clark"; September 24, 1880 – December 30, 1999) was an American supercentenarian, and the world's oldest living person between the death of Canadian woman Marie-Louise Meilleur on April 16, 1998, and her own death from natural causes aged 119 years, 97 days. Knauss is the oldest American ever and the third-oldest person in history, behind Jeanne Calment and Kane Tanaka.