Eduard Thurneysen (10 July 1888, in Walenstadt – 21 August 1974, in Basel) was a Swiss Protestant clergyman and theologian, who was an important representative of dialectical theology.
He studied theology under Bernhard Duhm and Paul Wernle at the University of Basel, and from 1911 served as an assistant secretary of the Christliche Verein Junger Menschen in Zürich. From 1913 to 1920 he was a pastor in Leutwil, during which time, he came in close contact with Karl Barth, then a minister in nearby Safenwil.
In 1920 he took charge of the parish in St. Gallen-Bruggen, then from 1927 to 1959 was a pastor at Basler Münster. From 1930 he taught classes in theology at the University of Basel, becoming an associate professor of practical theology in 1941. In 1960–63 he gave guest lectures in Hamburg, Wuppertal and Berlin.
From 1923 to 1933 he was editor of the journal Zwischen den Zeiten, and from 1933 with Karl Barth, was editor of the publication Theologische Existenz heute.