The 1926 Kingston upon Hull Central by-election was fought on 29 November 1926 when Joseph Kenworthy changed party allegiance from the Liberal Party to the Labour Party and sought re-election with the change of party allegiance. Kenworthy retained the seat.
| Party | Candidate | Votes | % | ±% | |
|---|---|---|---|---|---|
| Labour | Joseph Kenworthy | 16,145 | 52.9 | New | |
| Conservative | Lancelot Evelyn Gaunt | 11,466 | 37.6 | −8.3 | |
| Liberal | Charles Kerr | 2,885 | 9.5 | −44.6 | |
| Majority | 4,679 | 15.3 | N/A | ||
| Turnout | 30,496 | 82.8 | +5.7 | ||
| Labour gain from Liberal | Swing | ||||