Ruth Dreifuss (an haife ta 9 Janairu 1940 a St. Gallen) 'yar siyasan Switzerland ce mai alaƙa da Social Democratic Party. Ta kasance memba na Majalisar Tarayyar Swiss daga 1993 zuwa 2002, mai wakiltar Canton na Geneva. An zabe ta a Majalisar Tarayya ta Switzerland a ranar 10 ga Maris 1993 a matsayin mamba na 100 da aka zaba tun kafuwar gwamnatin tarayya. Dreifuss ta na ɗaya daga cikin tsofaffin iyalai Yahudawa a Switzerland.Mahaifinta dan kasuwa ne. Ruth da ƙanenta sun tafi makaranta. Bayan ilimin kasuwanci, Ruth ta yi aiki a matsayin sakatare da ma'aikacin zamantakewa. Har ila yau, ta kasance 'yar jarida a Cooperation daga 1961 zuwa 1964. Ta shiga jam'iyyar Socialist Party (SP) a 1964. A 1970 ta sami digiri na biyu a fannin tattalin arziki a Jami'ar Geneva; kuma ta kasance mataimaki a jami'a daga 1970 zuwa 1972. Tsakanin 1972 da 1981, ta kasance ƙwararriyar kimiyya a Hukumar Raya Haɗin Kai da Haɗin kai ta Tarayyar Swiss.