Johann Heinrich Christoph Willibald Beyschlag (5 September 1823 – 25 November 1900 in Halle an der Saale) was a German theologian from Frankfurt am Main.

In 1856 he became a court preacher in Karlsruhe, and four years later, he was appointed a professor of practical theology and New Testament exegesis at the University of Halle.

[1][3] Also, he was a primary catalyst in the founding of the Evangelischer Bund [de] (Protestant Confederation) —[4] he believed that only in unity could German Protestantism find strength.

[5][6] Beyschlag was viewed as an antagonist of the Roman Catholic Church and a sharp critic of Ultramontanism.

[1] In 1891 he published Neutestamentliche Theologie, oder, geschichtliche Darstellung der lehren Jesu und des Urchristenthums nach den neutestamentlichen Quellen, a book that was later translated into English and published as "New Testament theology; or, Historical account of the teaching of Jesus and of primitive Christianity according to the New Testament sources" (translation by Rev.