| Helmold III, Count of Schwerin | |
| Noble Family: | House of Hagen |
| Father: | Gunzelin III, Count of Schwerin |
| Mother: | Margaret of Mecklenburg |
| Spouse: | Mathilda of Saxony Margaret of Schleswig |
| Birth Date: | before 1264 |
| Death Date: | 1295 |
Helmhold III, Count of Schwerin (died 1295) was a German nobleman. He was a son of Count Gunzelin III of Schwerin-Boizenburg and Margaret of Mecklenburg. Helmhold III was the ruling Count of Schwerin-Neustadt and Marnitz from 1274 until his death.
Helmold married twice. His first wife was Mathilda (some sources call her Margaret; d. 1265), a daughter of Albert I, Duke of Saxony. Together, they had three children:
After Mathilda's death, Helmold married Margaret, the daughter of Eric I, Duke of Schleswig. This marriage remained childless.