North Wiltshire is a constituency^{[n 1]} represented in the House of Commons of the UK Parliament since 1997 by James Gray, a Conservative.^{[n 2]} In the period 1832–1983, this was an alternative name for Chippenham or the Northern Division of Wiltshire and as Chippenham dates to the original countrywide Parliament, the Model Parliament, this period is covered in more detail in that article.

The seat is due to be abolished for the next general election.^[2]

1832–1885: The Hundreds of Chippenham, North Damerham, Bradford, Melksham, Potterne and Cannings, Calne, Selkley, Ramsbury, Whorwelsdown, Swanborough, Highworth, Cricklade and Staple, Kingsbridge, and Malmesbury.^[3]

1983–1997: The District of North Wiltshire.

1997–2010: The District of North Wiltshire wards of Allington, Ashton Keynes, Audley, Avon, Box, Bremhill, Brinkworth, Colerne, Corsham, Crudwell, Hill Rise, Hilmarton, Kington Langley, Kington St Michael, Lacock, Lyneham, Malmesbury, Malmesbury Road, Minety, Monkton Park, Neston and Gastard, Nettleton, Park, Pickwick, Purton, Queen's, Redland, St Paul Malmesbury Without, Sherston, Somerford, The Lydiards, Town, Westcroft, Wootton Bassett North, and Wootton Bassett South.

2010–present: The District of North Wiltshire wards of Ashton Keynes and Minety, Box, Bremhill, Brinkworth and The Somerfords, Calne Abberd, Calne Chilvester, Calne Lickhill, Calne Marden, Calne Priestley, Calne Quemerford, Calne Without, Colerne, Cricklade, Hilmarton, Kington Langley, Kington St Michael, Lyneham, Malmesbury, Nettleton, Purton, St Paul Malmesbury Without and Sherston, The Lydiards and Broad Town, Wootton Bassett North, and Wootton Bassett South.

The constituency covers most of the northern third of Wiltshire. However it excludes the eastern town of Swindon which is represented as North Swindon and South Swindon.

North Wiltshire constituency was formed by a renaming for the 1983 general election, with boundaries identical to the former Chippenham constituency (1885–1983).^[4] The constituency sits between the Cotswolds and Swindon. Its main towns are Calne, Royal Wootton Bassett (a town which was a borough constituency until abolished as a 'rotten borough' in 1832), Cricklade and Malmesbury, and it also contains a number of villages, both small and large, spread over a large area of farming countryside, including the well-known (often-painted and photographed) village of Castle Combe.

For the 2010 general election the North Wiltshire constituency changed radically as a result of boundary change recommendations. The constituency now covers a northern swathe of the previous version retaining the towns of Malmesbury, Cricklade, Royal Wootton Bassett and Calne^{[n 3]} while the largest southern town of Chippenham was given its own seat (which was previously abolished in 1983) that brought in the nearby market towns of Bradford on Avon and Melksham including parts of other seats.^[5]

While North Wiltshire has a long history of returning Conservative candidates, its district council (created in 1973 and abolished in 2009) was closely contested between the Conservatives and the Liberal Democrats with many electoral wards being marginal.

Further to the completion of the 2023 Periodic Review of Westminster constituencies, the seat will be abolished for the next general election, with its contents distributed three ways:^[2]

• Northern and western parts, including Cricklade, Purton and Malmesbury, forming part of the new seat of South Cotswolds
• Southern and eastern areas, including Royal Wootton Bassett, Lyneham and most of the town of Calne, added to a re-configured Chippenham constituency
• The Box and Colerne, and Calne South wards included in the new seat of Melksham and Devizes

• List of parliamentary constituencies in Wiltshire