50°26′41″N 4°56′35″W / 50.4447°N 4.9431°W
| Trewan Hall | |
|---|---|
 | |
| Location | St Columb Major, Cornwall, England |
| Coordinates | 50°26′41″N 4°56′35″W / 50.4447°N 4.9431°W |
Listed Building – Grade II* | |
| Official name | Trewan Hall with attached garden walls |
| Designated | 7 January 1952 |
| Reference no. | 1144124 |
  Location of Trewan Hall in Cornwall | |
Trewan Hall (pronounced Trew-an) is a historic manor house in the parish of St Columb Major, Cornwall, England, UK. The surviving Jacobean style manor house is located one mile north of the town. It was the ancestral estate of the Vivian family (later Vyvyan, when a Vivian daughter married a distant cousin with varied spelling) for over 300 years, until it was sold in 1920.
The house and gardens, which now includes campsite grounds, has been privately owned by its current owners since 1960. Although the manor house is not generally open to the public, it holds annual open days as part of the National Gardens Scheme.