| Election Name: | 2021 Lincolnshire County Council election |
| Country: | Lincolnshire |
| Type: | parliamentary |
| Party Colour: | Conservative Party (UK) |
| Previous Election: | 2017 |
| Previous Year: | 2017 |
| Next Election: | 2025 |
| Next Year: | 2025 |
| Seats For Election: | All 70 seats to Lincolnshire County Council |
| Election Date: | 6 May 2021 |
| Majority Seats: | 36 |
| Council Leader: | Martin Hill |
| Party1: | Conservative Party (UK) |
| Last Election1: | 58 |
| Seats1: | 54[1] [2] |
| Seat Change1: | 4 |
| Party2: | Independent (politician) |
| Last Election2: | 4 |
| Seats2: | 5 |
| Seat Change2: | 1 |
| Party3: | Labour Party (UK) |
| Last Election3: | 6 |
| Seats3: | 4 |
| Seat Change3: | 2 |
| Party4: | Liberal Democrats (UK) |
| Last Election4: | 1 |
| Seats4: | 3 |
| Seat Change4: | 2 |
| Party5: | South Holland Independents |
| Last Election5: | 1 |
| Seats5: | 3 |
| Seat Change5: | 2 |
| Party6: | Lincolnshire Independents |
| Last Election6: | 1 |
| Seats6: | 1 |
| Map Size: | 300px |
| Council control | |
| Posttitle: | Council control after election |
| Before Election: | Conservative |
| After Election: | Conservative |
Elections to Lincolnshire County Council were held on 6 May 2021, alongside other local elections.[3]
Alison Austin, elected as an independent in the Boston South division, joined local party the South Holland Independents in the summer of 2023.[5]