Hammoon is a hamlet and parish in north Dorset in south-west England. It is sited on alluvial silt by the River Stour, approximately 2 miles east of Sturminster Newton. Its name derives from the Saxon word for dwelling ('ham') and the surname of the Norman Lord of the Manor ('de Moion' or 'Mohun'). The small church dates from the 13th century, and was the first incumbency of the academic and clergyman Humphrey Gower (1638–1711), who later went on to become Master of Jesus College, Cambridge and then St. John's College, Cambridge. The church stands close to the thatched and mullioned old manor house, which was described by Sir Frederick Treves in 1905 as "the most picturesque of its kind".