Joscelin III, Count of Edessa
| Joscelin III | |
|---|---|
| Seneschal of Jerusalem | |
| Coat of Arms of the House of Courtenay | |
| Born | c. 1139 | 
| Died | after 1190 | 
| Wars and battles | Third Crusade | 
| Noble family | House of Courtenay | 
| Spouse(s) | Agnes of Milly | 
| Issue | Beatrix de Courtenay Agnes de Courtenay | 
| Father | Joscelin II | 
| Mother | Beatrice of Saone | 
Joscelin III (c. 1139 – after 1190) was the titular count of Edessa, who during his lifetime managed to amass enough land to establish a lordship in the Kingdom of Jerusalem.