| Undershaw | |
|---|---|
 The façade of Undershaw, circa 1900, with Sir Arthur Conan Doyle's children Mary and Kingsley on the driveway | |
| Location | Hindhead |
| Coordinates | 51°06′48″N 0°44′00″W / 51.113252°N 0.733412°W |
| OS grid reference | SU8875735647 |
| Area | Surrey |
| Built | 1897 |
| Architect | Joseph Henry Ball |
Listed Building – Grade II | |
| Official name | Undershaw |
| Designated | 19 September 1977 |
| Reference no. | 1244471 |
  Location of Undershaw in Surrey | |
Undershaw is a former residence of the author Sir Arthur Conan Doyle, the creator of Sherlock Holmes. The house was built for Doyle at his order to accommodate his wife's health requirements, and is where he lived with his family from 1897 to 1907. Undershaw is where Doyle wrote many of his works, including The Hound of the Baskervilles.
For decades after Doyle sold the house, Undershaw served as a hotel, which closed in 2004. The property was then vacant, and the subject of controversy. In 2014 the house and grounds were purchased by the DFN Charitable Foundation for Stepping Stones School, a school for children with special needs.