Fritwell Manor is a house in Fritwell, Oxfordshire, England.
In 1520, it was owned by Margaret Boleyn, grandmother of Anne Boleyn, the second wife of Henry VIII of England. In the early twentieth century the important Gothic revival architect Thomas Garner owned the manor.
The house now may have some 16th-century elements, but was mainly built for George Yorke in 1619. 'The Celebrated Captain Barclay' (Robert Barclay Allardice), Regency sportsman, lived there briefly 1815-16. It was restored in the late nineteenth century and underwent further restoration and enlargement in the early twentieth century.
It is a grade II* listed building.
Steam locomotive 7815 of the GWR Manor Class was named for the house; it was built in 1939 and withdrawn in 1964.
Coordinates: 51°57′41″N 1°14′19″W / 51.9613°N 1.2387°W