Johann Schweikhard von Kronberg (15 July, 1553 – 17 September, 1626) was the Archbishop-Elector of Mainz from 1604 to 1626.

With his older brothers taking over the family's offices, Johann was destined for a career in the church from an early age.

His uncle, Daniel Brendel von Homburg was Archbishop of Mainz, and sent him to the Collegium Germanicum in Rome.

[2] Following the death of Johann Adam von Bicken, the cathedral chapter of Mainz Cathedral elected Johann Schweikhard von Kromberg as the new Archbishop of Mainz on February 17, 1604 with the support of Rudolf II, Holy Roman Emperor, who feared that the election of the rival candidate, Julius Echter von Mespelbrunn, Bishop of Würzburg would destabilize relations with the Protestants of the Holy Roman Empire.

[1] The Archbishop-Elector of Mainz was also archchancellor of Germany and, as such, ranked first among all ecclesiastical and secular princes of the Empire.

Johann Schweikhard von Kronberg opposed the intervention of Henry IV of France in the War of the Jülich succession in 1609.