John I, Count of Holstein-Kiel (c. 1229 – 20 April 1263) was a member of the House of Schauenburg.

John was the eldest son of Count Adolf IV of Schauenburg and Holstein and his wife Heilwig of Lippe.

After his father retired to the monastery in 1239, John ruled jointly with his younger brother Gerhard I, initially under regency.

After his death, his sons ruled jointly under the regency of their uncle Gerhard.

In the middle: SCOVENBG COMES(Count of Schauenburg) John married in 1249 or 1250 to Elisabeth (died between 1293 and 1306), a daughter of Duke Albert I of Saxony.