Johann Adam von Bicken (27 May 1564 – 11 January 1604) was the Archbishop-Elector of Mainz from 1601 to 1604.

Johann von Bicken was destined for a career in the church from an early age.

During the reign of Wolfgang von Dalberg, Archbishop of Mainz, Johann held several administrative posts, and was present at the Regensburg Reichstag of 1597.

A large number of witch trials were held during his time as archbishop.

Johann Adam von Bicken died in Aschaffenburg on 11 January 1604.