Dietrich Schenk von Erbach (c. 1390 – 4 May 1459) was a German nobleman who served as Archbishop and Elector of Mainz from 1434 until his death in 1459.

[1][2][3] Dietrich was a son of Arch-Cupbearer Eberhard VI of Erbach.

He was a member of the cathedral chapter of Mainz when on 6 July 1434 he was elected its archbishop.

At the Council of Basel Theodoric maintained a neutral position and tried to mediate between both sides.

In 1439 he managed to get all the German princes and the King to recognise Eugene as the legal pope.