| Election Name: | 2023 Lumsden-Morse provincial by-election |
| Seats For Election: | District of Lumsden-Morse |
| Type: | parliamentary |
| Country: | Saskatchewan |
| Previous Election: | 2020 Saskatchewan general election |
| Next Election: | 30th Saskatchewan general election |
| Turnout: | 36.84% |
| Image1: | SP |
| Candidate1: | Blaine McLeod |
| Popular Vote1: | 2,696 |
| Percentage1: | 53.42% |
| Swing1: | 19.98 |
| Candidate2: | Jon Hromek |
| Popular Vote2: | 1,145 |
| Percentage2: | 22.69% |
| Swing2: | New |
| Image3: | NDP |
| Candidate3: | Kaitlyn Stadnyk |
| Popular Vote3: | 1,110 |
| Percentage3: | 21.99% |
| Swing3: | 4.01 |
| MLA | |
| Before Election: | Lyle Stewart |
| Posttitle: | Elected MLA |
| After Election: | Blaine McLeod |
A by-election was held in the provincial riding of Lumsden-Morse in Saskatchewan on August 10, 2023, to elect a new member of the Legislative Assembly of Saskatchewan following the resignation of Saskatchewan Party MLA Lyle Stewart.[1]
It was held the same day as two others in the province; Regina Coronation Park and Regina Walsh Acres.[2]
The list of candidates:[3]