Alexander St Clair | |
|---|---|
| Baron of Roslin | |
 Baron of Roslin coat of arms | |
| Predecessor | James St Clair, 18th Baron of Roslin |
| Successor | William St Clair of Roslin |
| Born | 1672 |
| Died | 1706 |
| Noble family | Clan Sinclair |
| Father | James St Clair |
| Mother | Jean Spotswood |
Alexander St Clair (1672–1706) was the 19th Baron of Roslin.