William O'Shea | |
|---|---|
 O'Shea c. 1880 | |
| Member of Parliament for Galway Borough | |
| In office 1886–1886 | |
| Preceded by | T. P. O'Connor |
| Succeeded by | John Pinkerton |
| Member of Parliament for Clare | |
| In office 1880–1885 Serving with James Patrick Mahon | |
| Preceded by | James Patrick Mahon Lord Francis Conyngham |
| Succeeded by | Constituency abolished |
| Personal details | |
| Born | 1840 Dublin, Ireland, UK |
| Died | 22 April 1905 (aged 65) |
| Political party | Independent Nationalist |
| Spouse | |
| Military service | |
| Allegiance |  United Kingdom |
| Branch/service | British Army |
| Rank | Captain |
| Unit | 18th Royal Hussars |
Captain William Henry O'Shea (1840 – 22 April 1905) was an Irish soldier and Member of Parliament. He is best known for being the ex-husband of Katharine O'Shea, the long-time mistress of the Irish nationalist leader Charles Stewart Parnell.