| Name | Party | Ward | End of Term |
|---|
| Colin Matthews (email) | Conservative and Unionist Party | Alford and Sutton | 06-05-2021 |
| Ian Gordon Fleetwood (email) | Conservative and Unionist Party | Bardney and Cherry Willingham | 06-05-2021 |
| Mrs Marianne Jane Overton MBE (email) | Independent | Bassingham and Welbourn | 06-05-2021 |
| Edmund Walter Strengiel (email) | Conservative and Unionist Party | Birchwood | 06-05-2021 |
| Paul Anthony Skinner (email) | Conservative and Unionist Party | Boston Coastal | 06-05-2021 |
| Aaron Jacob Spencer (email) | Conservative and Unionist Party | Boston North | 06-05-2021 |
| Michael Brookes (email) | Conservative and Unionist Party | Boston Rural | 06-05-2021 |
| Mrs Alison Mary Austin (email) | Independent | Boston South | 06-05-2021 |
| Mrs Paula Cooper (email) | Conservative and Unionist Party | Boston West | 06-05-2021 |
| Kevin John Clarke (email) | Labour Party | Boultham | 06-05-2021 |
| Mrs Susan Woolley (email) | Conservative and Unionist Party | Bourne North and Morton | 06-05-2021 |
| Robert Philip Harry Reid (email) | Conservative and Unionist Party | Bourne South and Thurlby | 06-05-2021 |
| Robert Bernard Parker (email) | Labour Party | Carholme | 06-05-2021 |
| Bob Adams (email) | Conservative and Unionist Party | Colsterworth Rural | 06-05-2021 |
| Nigel Harry Pepper (email) | Conservative and Unionist Party | Crowland | 06-05-2021 |
| Barry Martin Dobson (email) | Conservative and Unionist Party | Deepings East | 06-05-2021 |
| Rosemary Helen Trollope-Bellew (email) | Conservative and Unionist Party | Deepings West and Rural | 06-05-2021 |
| Rodney Grocock (email) | Conservative and Unionist Party | Donington Rural | 06-05-2021 |
| Dr Michael Ernest Thompson (email) | Conservative and Unionist Party | Eagle and Hykeham West | 06-05-2021 |
| Christopher Edward Reid (email) | Conservative and Unionist Party | Ermine and Cathedral | 06-05-2021 |
| Martin John Hill OBE (email) | Conservative and Unionist Party | Folkingham Rural | 06-05-2021 |
| Matthew David Boles (email) | Liberal Democrats | Gainsborough Hill | 06-05-2021 |
| Richard David Butroid (email) | Conservative and Unionist Party | Gainsborough Rural South | 06-05-2021 |
| Paul Michael Key (email) | Independent | Gainsborough Trent | 06-05-2021 |
| Mark Anthony Whittington (email) | Conservative and Unionist Party | Grantham Barrowby | 06-05-2021 |
| Linda Wootten (email) | Conservative and Unionist Party | Grantham East | 06-05-2021 |
| Ray Wootten (email) | Conservative and Unionist Party | Grantham North | 06-05-2021 |
| Adam Neil Stokes (email) | Conservative and Unionist Party | Grantham South | 06-05-2021 |
| Richard Graham Davies (email) | Conservative and Unionist Party | Grantham West | 06-05-2021 |
| Matthew Thomas Fido (email) | Conservative and Unionist Party | Hartsholme | 06-05-2021 |
| Barry Young (email) | Conservative and Unionist Party | Heckington | 06-05-2021 |
| Charles Nicholas Worth (email) | Conservative and Unionist Party | Holbeach | 06-05-2021 |
| Peter Ephraim Coupland (email) | Conservative and Unionist Party | Holbeach Rural | 06-05-2021 |
| William James Aron (email) | Conservative and Unionist Party | Horncastle and The Keals | 06-05-2021 |
| Alexander Paul Maughan (email) | Conservative and Unionist Party | Hough | 06-05-2021 |
| Stephen Peter Roe (email) | Conservative and Unionist Party | Hykeham Forum | 06-05-2021 |
| Colin John Davie (email) | Conservative and Unionist Party | Ingoldmells Rural | 06-05-2021 |
| Tony Bridges (email) | Conservative and Unionist Party | Louth North | 06-05-2021 |
| Sarah Rosemary Parkin (email) | Labour Party | Louth South | 06-05-2021 |
| Charles Edward Hugo Marfleet (email) | Conservative and Unionist Party | Louth Wolds | 06-05-2021 |
| Graham Edward Cullen (email) | Labour Party | Mablethorpe | 06-05-2021 |
| Charles Lewis Strange (email) | Conservative and Unionist Party | Market Rasen Wolds | 06-05-2021 |
| Robert Jozef Kendrick (email) | Conservative and Unionist Party | Metheringham Rural | 06-05-2021 |
| Mrs Jacqueline Brockway (email) | Conservative and Unionist Party | Nettleham and Saxilby | 06-05-2021 |
| Anthony Herbert Turner MBE JP (email) | Conservative and Unionist Party | North Wolds | 06-05-2021 |
| Mrs Julie Elizabeth Killey (email) | Labour Party | Park | 06-05-2021 |
| Clive Ronald Oxby (email) | Conservative and Unionist Party | Potterhanworth and Coleby | 06-05-2021 |
| Mark John Storer (email) | Conservative and Unionist Party | Ruskington | 06-05-2021 |
| Daniel McNally (email) | Conservative and Unionist Party | Saltfleet and the Cotes | 06-05-2021 |
| Clio Lyndon Perraton-Williams (email) | Conservative and Unionist Party | Scotter Rural | 06-05-2021 |
| Carl Stuart Macey (email) | Conservative and Unionist Party | Skegness North | 06-05-2021 |
| Stephen Russell Kirk (email) | Conservative and Unionist Party | Skegness South | 06-05-2021 |
| Martin Alexander Griggs (email) | Conservative and Unionist Party | Skirbeck | 06-05-2021 |
| Mrs Kathryn Cook (email) | Independent | Sleaford | 06-05-2021 |
| Andrew Gibson Hagues (email) | Conservative and Unionist Party | Sleaford Rural | 06-05-2021 |
| Edward John Poll (email) | Conservative and Unionist Party | Spalding East | 06-05-2021 |
| Mrs Elizabeth Jane Sneath (email) | Conservative and Unionist Party | Spalding Elloe | 06-05-2021 |
| Mrs Christine Jane Lawton (email) | Conservative and Unionist Party | Spalding South | 06-05-2021 |
| Mrs Angela Mary Newton (email) | Independent | Spalding West | 06-05-2021 |
| Robin Anthony Renshaw (email) | Labour Party | St Giles | 06-05-2021 |
| Robert Lloyd Foulkes (email) | Independent | Stamford East | 06-05-2021 |
| David Brailsford (email) | Conservative and Unionist Party | Stamford West | 06-05-2021 |
| Hilton Spratt (email) | Conservative and Unionist Party | Swallow Beck and Witham | 06-05-2021 |
| Thomas Robert Ashton (email) | Conservative and Unionist Party | Tattershall Castle | 06-05-2021 |
| Christopher James Thomas Harrison Brewis (email) | Independent | The Suttons | 06-05-2021 |
| Mrs Christine Anne Talbot (email) | Conservative and Unionist Party | Waddington and Hykeham East | 06-05-2021 |
| Mrs Wendy Bowkett (email) | Conservative and Unionist Party | Wainfleet | 06-05-2021 |
| Lindsey Ann Cawrey (email) | Conservative and Unionist Party | Washingborough | 06-05-2021 |
| Mrs Susan Rawlins (email) | Conservative and Unionist Party | Welton Rural | 06-05-2021 |
| Mrs Patricia Anne Bradwell OBE (email) | Conservative and Unionist Party | Woodhall Spa and Wragby | 06-05-2021 |