Sir Algernon de Horsey | |
|---|---|
| Born | 25 July 1827 |
| Died | 22 October 1922 (aged 95) |
| Allegiance |  United Kingdom |
| Service |  Royal Navy |
| Years of service | 1840–1892 |
| Rank | Admiral |
| Commands | HMS Devastation HMS Victor HMS Brisk HMS Wolverine HMS Aurora HMS Hector Pacific Station |
| Awards | Knight Commander of the Order of the Bath |
Admiral Sir Algernon Frederick Rous de Horsey KCB DL (25 July 1827 – 22 October 1922) was a Royal Navy officer, appointed aide-de-camp to Queen Victoria. He distinguished himself in Canada during the Fenian raids, and was thanked in Parliament for suppressing riots in Jamaica.