Mottisfont is a village and civil parish in the Test Valley district of Hampshire, England, around 4 miles northwest of Romsey. The village is the location of Mottisfont Abbey. Much of the surrounding land, which is part of the Mottisfont Estate, and several other buildings in the village are in the care of the National Trust. The unusual name is probably derived from the Old English motes funta, meaning 'spring near the confluence' or 'spring of the moot' or possibly 'spring of the stone'.