Emma Ratz Kaufman (1881-1979) was a Canadian activist and philanthropist who worked as an international YWCA administrator. For over 25 years she served as a secretary on the staff of Tokyo Y.W.C.A., and also a member of the national Y.W.C.A. committee of Japan. In 1929 she was honored for her distinguished service to the Japanese Y.W.C.A. by being presented with the Emperor's silver cup.