The 1891 East Dorset by-election was held on 27 November 1891 after the death of the incumbent Conservative MP George Hawkesworth Bond. The seat was retained by the Conservative candidate Humphrey Napier Sturt.
| Party | Candidate | Votes | % | ±% | |
|---|---|---|---|---|---|
| Conservative | Humphrey Napier Sturt | 4,421 | 52.0 | −2.1 | |
| Liberal | Pascoe Glyn | 4,074 | 48.0 | +2.1 | |
| Majority | 347 | 4.0 | −4.2 | ||
| Turnout | 8,495 | 83.5 | +1.7 | ||
| Conservative hold | Swing | -2.1 | |||