| Gerhard II, Count of Holstein-Plön | |
| Noble Family: | House of Schauenburg |
| Father: | Gerhard I, Count of Holstein-Itzehoe |
| Mother: | Elisabeth of Mecklenburg |
| Spouse: | Ingeborg of Sweden Agnes of Brandenburg |
| Issue: | by Ingeborg: Catherine Gerhard IV Valdemar, Count of Holstein-Schauenburg Elizabeth, Duchess of Pomerania by Agnes: John III |
| Birth Date: | 1254 |
| Death Date: | 28 October |
Gerhard II of Holstein-Plön (1254 - 28 October 1312), nicknamed the Blind, was Count of Holstein-Plön from 1290 to 1312.
He was the second son of Gerhard I, Count of Holstein-Itzehoe and Elisabeth of Mecklenburg.
After his father's death in 1290, the county was divided among the surviving sons. Gerhard II received Holstein-Plön; his younger brother Adolph VI received Holstein-Schauenburg and Henry received Holstein-Rendsburg.
The seal reads
Latin: S(IGILLUM)*GERARDI*COMITIS*HOLTSACIE*ET*IN*SCHOWENBURCH
"Seal of Count Gerhard of Hostein and Schauenburg"
He married on 12 December 1275 the Swedish Princess Ingeborg (born: ; died:), a daughter of King Valdemar of Sweden. They had four children:
In 1293 Gerhard married Agnes of Brandenburg, the widow of King Eric V of Denmark. With her, he had a son: