Karl Friedrich Erich Haupt (8 July 1841 – 19 February 1910) was a German Lutheran theologian.
He later worked as a schoolteacher in Kolberg and Treptow an der Rega.
He was a professor of New Testament exegesis, successively at Kiel (from 1878), Greifswald (from 1883), and Halle (from 1888), where in 1902 he was named university rector.
[1] He was successor to Willibald Beyschlag as chairman of the main association of the Gustav-Adolf-Stiftung, and from 1901 to 1908 was editor of the "Deutsch-evangelischen Blätter".
For a period of time, he served as head of the Evangelischen Bundes (Protestant Federation).