| Election Name: | 2023 Kitchener Centre provincial by-election |
| Country: | Ontario |
| Seats For Election: | Riding of Kitchener Centre |
| Type: | Parliamentary |
| Ongoing: | no |
| Party Colour: | no |
| Party Name: | no |
| Previous Election: | 2022 Ontario general election |
| Previous Year: | 2022 |
| Next Election: | 44th Ontario general election |
| Next Year: | 44th |
| Turnout: | 27.28% (18.94) |
| Image4: | PC |
| Candidate4: | Rob Elliot |
| Popular Vote2: | 6,312 |
| Percentage2: | 26.73% |
| Swing2: | 13.86 |
| Image1: | Aislinn Clancy Kit Cen (cropped).jpg |
| Candidate1: | Aislinn Clancy |
| Popular Vote5: | 1,821 |
| Percentage5: | 7.71% |
| Swing5: | 7.01 |
| Candidate2: | Debbie Chapman |
| Popular Vote4: | 3,109 |
| Percentage4: | 13.16% |
| Swing4: | 13.51 |
| Image5: | LIB |
| Candidate5: | Kelly Steiss |
| Popular Vote1: | 11,334 |
| Percentage1: | 47.99% |
| Swing1: | 35.19 |
| Posttitle: | Elected |
| Before Election: | Laura Mae Lindo |
| After Election: | Aislinn Clancy |
A by-election was held in the provincial riding of Kitchener Centre in Ontario on November 30, 2023, to elect a new member of the Legislative Assembly of Ontario following the resignation of NDP MPP Laura Mae Lindo.[1] Kitchener City Councillor Aislinn Clancy gained the seat for the Ontario Greens. Clancy is the second member of the Ontario Greens to be elected in the province, following party leader Mike Schreiner.[2] In addition, the by-election featured 18 candidates, the largest-ever number of candidates in an Ontario riding election.[3] Clancy defeated fellow city councillor Debbie Chapman who was the NDP candidate.[4]