| Manasses III, Count of Rethel | |
|---|---|
| Born | 1022 | 
| Died | 1065 | 
| Noble family | de Rethel | 
| Spouse(s) | Judith of Roucy | 
| Issue | |
| Father | Manasses II, Count of Rethel | 
| Mother | Dada | 
Manasses III, Count of Rethel (1022-1065) was a son of Manasses II and his wife Dada. He succeeded his father as Count of Rethel in 1032. Rethel is a town on the River Aisne, in the Ardennes region, in the Northeast of France, located at 49.5085°N, 4.3663°E.
Manasses III married Judith of Roucy (b. 1035), daughter of Count Giselbert of Reims and granddaughter of Renaud of Roucy. He was the father of