Johannes von Geissel (5 February 1796 – 8 September 1864) was a German Catholic Archbishop of Cologne and Cardinal from the Electorate of the Palatinate.

Nominated Bishop of Speyer by the King of Bavaria, he was preconized by Pope Gregory XVI, 20 May 1837, and consecrated in Augsburg cathedral the following 13 August.

After the accession to the throne of Prussia of Frederick William IV, the "conflict of Cologne" was to be settled amicably by an agreement between Church and State, to the effect that Archbishop Clemens August von Droste-Vischering would relinquish the personal direction of the archdiocese, which should pass over to a coadjutor with the right of succession.

Discretion and a sense of justice on the part of the government of Frederick William IV made it possible for the cardinal to regulate and ameliorate the conditions of the archdiocese in harmony with the policy of the State.

He encouraged popular missions, introduced religious orders and congregations into the archdiocese, instituted the Perpetual Adoration, and stimulated devotion to the Blessed Virgin by celebrating with unusual splendour the declaration of the dogma of the Immaculate Conception.

After his death there appeared a special edition of his "Festgedicht auf die Grundsteinlegung zum Fortbau des Kölner Doms" (Cologne, 1865).