| William James Harris | |
| Office: | Member of Parliament for Poole |
| Term Start: | 19 April 1884 |
| Term End: | 25 November 1885 |
| Predecessor: | Charles Schreiber |
| Successor: | Constituency abolished |
| Birth Date: | 1835 |
| Nationality: | British |
| Party: | Conservative |
William James Harris (1835 – 29 October 1911) was a Conservative Party politician.
Harris was elected MP for Poole at a by-election in 1884. However, in 1885 the seat was abolished and Harris sought re-election in Ashburton, where he was unsuccessful.[1]