| Year: | 1929 |
|---|---|
| General election: | 1929 General Election |
| Constituency: | Caithness and Sutherland |
| Turnout: | 66.5% |
Results
| Candidate | Party | Votes |
| Sinclair, Archibald Henry Macdonald | Liberal | 13462 |
| Duncan, James Alexander Lawson | Scottish Unionist | 3041 |
| Oman, Charles | Independent Labour | 1711 |