The 2021 North East Lincolnshire Council election took place on 6 May 2021 to elect members of North East Lincolnshire Council in England.[1] This was on the same day as other local elections. 14 seats were up for election, and the Conservatives retained overall control.[2]
These elections were due to take place in 2020, but were postponed due to the COVID-19 pandemic.
|-| | Freedom Alliance| align="right"| 0| align="right"| 0| align="right"| 0| align="right"| 0| align="right"| 0.00| align="right"| 1.75| align="right"| 502| align="right"| +1.75|-
Following the last election in 2019, the composition of the council was:
| 23 | 15 | 4 | |
| Conservative | Labour | Lib Dem |
After the election, the composition of the council was:
| 31 | 8 | 3 | |
| Conservative | Labour | Lib Dem |
Only one seat was due to be contested, however a seat next due up for election in 2023 was also up for election due to a vacancy.
Only one seat was due to be contested, however a seat next due up for election in 2022 was also up for election due to the resignation of Lia Nici (Conservative).