John I of Sponheim-Kreuznach

John I, called the Lame (c. 1245–1290), was count of the Further County of Sponheim, ruling from Kreuznach. He succeeded his father Simon I in 1265 and married Adelaide of Leiningen. He later had to partition the inheritance with his brothers Henry and Eberhard, and mediation settled the division in 1277.

A feud followed when Henry sold Böckelheim Castle to the archbishop of Mainz against John's pre-emption right, and in 1279 John was defeated at Sprendlingen. He was buried at Pfaffen-Schwabenheim.