Eduardo Frei Ruiz-Tagle (born June 24, 1942) is a Chilean politician and civil engineer. He served as President of Chile from 1994 to 2000. He is currently senator for Los Ríos and was President of the Senate between 2006-2008.

Frei was born in Santiago to Eduardo Frei Montalva and María Ruiz-Tagle Jiménez. He received all his schooling at the Luis Campino Institute. He then attended the University of Chile, where he graduated as a Civil Engineer, specializing in hydraulics. After graduation, he followed advanced courses in management in Italy.

Frei took his first steps in politics while at the university, where he was a student leader. In 1958, he joined the Christian Democrat party, and in 1964 participated actively in his father's successful presidential campaign. Between 1969 and 1988 he concentrated on his profession, as one of the partners of Sigdo Koppers S.A., the largest engineering company in Chile.