| Robert III of Sablé | |
| Lord of Sablé-sur-Marthe | |
| Succession: | Lord of Sablé-sur-Marthe |
| Predecessor: | Lisiard of Sablé |
| Successor: | Robert IV of Sablé |
| Birth Date: | 1122 or 1123 |
| Birth Place: | Sablé, Kingdom of France |
| Death Date: | 1151 or 1152 |
| Spouse: | Hersende of Antenaise |
| Consort: | no |
| Issue: |
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| House: | Third House of Sablé |
| Father: | Lisiard of Sablé |
| Mother: | Thiphaine Chevrière of Briolé |
Robert II de Sablé (died 1165) was the son of Lisiard of Sable and Thiphaine of Briole.
Robert and his father Lisiard, Lord of Sablé, both fought against the Counts of Anjou, Fulk V and Geoffrey Plantagenet. This conflict lasted until 1145, when he was defeated in battle and would remain a loyal subject of the Counts of Anjou.
Robert married Hersende of Anthenaise with whom he had: