| Garthmyl Hall, Berriew, Powys | |
|---|---|
 Garthmyl Hall is a Grade II listed house in Berriew historic county of Montgomeryshire | |
  Location in Powys | |
| General information | |
| Location | Powys, Wales, UK |
| Coordinates | 52°29′23″N 3°14′30″W / 52.489732°N 3.241541°W |
| OS grid | SO319088298935 |
Garthmyl Hall is a Grade II listed house in Berriew, in the historic county of Montgomeryshire, now Powys. The house stood close to the site of a large 17th-century large timber-framed house. Garthmyl Hall was rebuilt in 1859 by the architect James K Colling for Major-General William George Gold.