Old Slains Castle
| Old Slains Castle | |
|---|---|
| The remains of Old Slains Castle | |
| Coordinates | 57°21′39″N 1°54′52″W / 57.3609°N 1.91438°W | 
| OS grid reference | NK052300 | 
| Built | 13th-century | 
| Built for | Comyn, Earl of Buchan | 
| Official name | Slains Castle | 
| Type | Secular: castle; earthwork; tower | 
| Designated | 26 December 1972 | 
| Reference no. | SM3250 | 
Slains Castle (otherwise known as Old Slains Castle) is a ruined castle near Collieston in Aberdeenshire, Scotland. It is not to be confused with New Slains Castle, a separate building located five miles (eight kilometres) northeast. Built in the 13th century, it was partly destroyed in 1594.