| Election Name: | 2021 Welwyn Hatfield Borough Council election |
| Country: | United Kingdom |
| Type: | parliamentary |
| Previous Election: | 2019 Welwyn Hatfield Borough Council election |
| Previous Year: | 2019 |
| Next Election: | 2022 Welwyn Hatfield Borough Council election |
| Next Year: | 2022 |
| Seats For Election: | 17 out of 48 seats to Welwyn Hatfield Borough Council |
| Majority Seats: | 25 |
| Leader1: | Tony Kingsbury |
| Party1: | Conservative Party (UK) |
| Last Election1: | 23 |
| Seats Before1: | 23 |
| Seats1: | 8 |
| Seats After1: | 28 |
| Seat Change1: | 5 |
| Popular Vote1: | 14,916 |
| Percentage1: | 48.7% |
| Swing1: | 9.9 |
| Leader2: | Paul Zukowskyj |
| Party2: | Liberal Democrats (UK) |
| Last Election2: | 12 |
| Seats Before2: | 12 |
| Seats2: | 2 |
| Seats After2: | 11 |
| Seat Change2: | 1 |
| Popular Vote2: | 6,576 |
| Percentage2: | 21.5% |
| Swing2: | 10.7 |
| Leader3: | Malcolm Cowan |
| Party3: | Labour Party (UK) |
| Last Election3: | 13 |
| Seats Before3: | 13 |
| Seats3: | 0 |
| Seats After3: | 9 |
| Seat Change3: | 4 |
| Popular Vote3: | 6,576 |
| Percentage3: | 24.0% |
| Swing3: | 1.4 |
| Map Size: | 375px |
| Leader | |
| Posttitle: | Leader after election |
| Before Party: | No overall control |
| After Election: | Tony Kingsbury |
| After Party: | Conservative Party (UK) |
Elections to Welwyn Hatfield Borough Council took place on 6 May 2021. This was on the same day as other local elections across the United Kingdom.
At the previous election the Liberal Democrats managed to gain enough of the popular vote to end the Conservatives's majority of the council for the first time since 2002. However, the results saw the Conservatives regaining much of the popular vote at the cost of the Liberal Democrats, with a swing of nearly 10 points. The Conservatives gained five seats, resulting in them once again gaining majority control of the council, with a working majority of eight.[1] [2] [3] The leader of the Conservatives on the council, Tony Kingsbury, assumed the position of leader of the council, and swiftly confirmed a new cabinet portfolio consisting of his fellow Conservative councillors.[4]
Despite a relatively minor drop in the vote share, Labour lost four of their seats. This marked the first time Labour failed to win a seat in a set of Welwyn Hatfield's local elections in the council's history. These loses were also enough for them to have less seats on the council than the Liberal Democrats, meaning for the first time the Liberal Democrats were the official opposition on the council. The Green Party also nearly doubled their share of the vote, although they still finished last in all their contested seats.