Lachlan MacKinnon | |
|---|---|
| Born | 2 December 1882 |
| Died | 11 October 1948 (aged 65) |
| Allegiance |  United Kingdom |
| Service |  Royal Navy |
| Years of service | 1898-1939 |
| Rank | Vice admiral |
| Commands | HMS Assistance HMS Danae HMS Warspite 2nd Battle Squadron |
| Battles / wars | Boxer Rebellion World War I World War II |
| Awards | Companion of the Order of the Bath Commander of the Royal Victorian Order |
Vice-Admiral Lachlan Donald Ian Mackinnon, CB, CVO (2 December 1882 – 11 October 1948) was a Royal Navy officer, especially noted for his role as a convoy commodore during the Second World War.