The Right Honourable The Earl of Loudoun | |
|---|---|
 _COA.svg) Coat of arms of the Earl of Loudoun | |
| Tenure | 2012–present |
| Predecessor | Michael Abney-Hastings, 14th Earl of Loudoun |
| Born | Simon Michael Rawdon Francis Abney-Hastings 29 October 1974 |
| Nationality | Australian |
| Locality | Wangaratta, Victoria |
| Heir | The Hon. Marcus Abney-Hastings |
| Parents | Michael Abney-Hastings, 14th Earl of Loudoun |
Simon Michael Abney-Hastings, 15th Earl of Loudoun (born 29 October 1974), styled as Lord Mauchline until 2012, is a British aristocrat living in Australia who is the current holder of the ancient Scottish noble title of Earl of Loudoun.