| Blackadder House | |
|---|---|
 Blackadder House | |
| Coordinates | 55°46′47″N 2°13′50″W / 55.779601°N 2.230428°W |
  Location in Scottish Borders | |
Blackadder House was an estate and stately house near the village of Allanton, in Berwickshire, Scotland. It was built on the site of the earlier Blackadder Castle. The house was vandalised by troops in World War I. Since there was no money to repair it, the house was demolished around 1925.