John Casimir, Count of Erbach-Breuberg

John Casimir, Count of Erbach-Breuberg (10 August 1584 – 14 January 1627), was a German prince member of the House of Erbach and ruler over Breuberg, Wildenstein and Fürstenau.

Born in Erbach, he was the eleventh child and fourth (but third surviving) son of George III, Count of Erbach-Breuberg and his second wife Anna, a daughter of Frederick Magnus, Count of Solms-Laubach-Sonnenwalde.^{[citation needed]}