Lincolnshire (abbreviated Lincs) is a county in the east of England. It borders Norfolk, Cambridgeshire, Rutland, Leicestershire, Nottinghamshire, South Yorkshire, the East Riding of Yorkshire, and (for just 19 metres or 20 yd, England's shortest county boundary) Northamptonshire. Its county town is the ancient city of Lincoln.

The ceremonial county of Lincolnshire is composed of the non-metropolitan county of Lincolnshire and the area covered by the unitary authorities of North Lincolnshire and North-East Lincolnshire. The county is the second largest of the English counties and one that is predominantly agricultural in character.

For the purposes of a general geographical classification the county can be broken down into a number of sub-regions including: the Lincolnshire Fens, the Lincolnshire Wolds, and the industrial Humber Estuary and North Sea coast around Grimsby and Scunthorpe.

Alford, Allington, Ancaster, Aswarby, Barnack, Barnoldby le Beck, Barton-upon-Humber, Belmesthorpe, Belton, Billingborough, Blankney, Boston, Boston Spa, Bourne, Brigg, Burgh le Marsh, Burton Coggles, Castle Bytham, Cleethorpes, Coleby, Coningsby, Corby Glen, Crowle, Donington on Bain, Duddington, East Barkwith, East Ferry, Eaton, Epworth, Ewerby, Faldingworth, Fleet Hargate, Frampton, Freiston, Friskney, Frognall, Fulstow, Gainsborough, Gedney Dyke, Gedney Hill, Glentham, Gosberton, Gosberton Risegate, Grainthorpe, Grantham, Great Casterton, Greatford, Grimsby, Halton Holegate, Heckington, Holbeach, Holton le Moor, Horncastle, Hubert's Bridge, Immingham, Ingham, Ingoldmells, Irnham, Keal Cotes, Kirby-on-Bain, Kirkstead, Kirton, Kirton in Lindsey, Kirton Lindsey, Laceby, Langrick, Laughton, Leadenham, Lincoln, Long Bennington, Louth, Ludford, Mablethorpe, Maltby le Marsh, Market Rasen, Martin Dales, Morton, Moulton Chapel, Newton, Normanby, Old Leake, Orby, Osgodby, Partney, Peterborough, Pinchbeck, Raithby, Rippingale, Ropsley, Ruskington, Ryhall, Saltfleet, Saltfleetby St Peter, Sandtoft, Scamblesby, Scunthorpe, Seacroft, Sewstern, Skegness, Sleaford, South Kyme, South Ormsby, South Rauceby, South Witham, Spalding, Spilsby, Stamford, Stoke Rochford, Surfleet, Sutton Bridge, Sutton on Sea, Sutton St Edmund, Sutton St James, Swinhope, Tattershall, Tealby, Theddlethorpe, Thimbleby, Thurlby, Torksey, Ulceby, Waddingham, Wainfleet, West Ashby, Weston, Weston Hills, Wigtoft, Winteringham, Woodhall Spa, Woodthorpe, Woolsthorpe, Wrangle, Wrawby, Wyberton Fen

• Alford Manor House
• Alford Windmill
• Alkborough Turf Maze
• Ayscoughfee Hall
• Belton House
• Bolingbroke Castle
• Boston Stump
• Branston Hall
• Cogglesford Watermill
• Crowland Abbey
• Doddington Hall
• Dunston Pillar
• East Lighthouse, Sutton Bridge
• Gainsthorpe
• Grimsthorpe Castle
• Harlaxton Manor
• Heckington Windmill
• Lincoln Castle
• Lincoln Cathedral
• Normanby Hall
• Gibraltar Point
• River Ancholme
• Tattershall Castle
• The Wash