| Honorific-Prefix: | The Right Honourable |
| The Lord Londesborough | |
| Office1: | Member of the House of Lords |
| Status1: | Lord Temporal |
| Term Label1: | as a hereditary peer |
| Term Start1: | 8 April 1996 |
| Term End1: | 11 November 1999 |
| Predecessor1: | The 8th Baron Londesborough |
| Successor1: | Seat abolished |
| Term Label2: | as an elected hereditary peer |
| Term Start2: | 23 June 2021 |
| Predecessor2: | The 31st Countess of Mar |
| Birth Name: | Richard John Denison |
| Birth Date: | 2 July 1959 |
| Party: | None (crossbench) |
Richard John Denison, 9th Baron Londesborough (born 2 July 1959), is a British hereditary peer and crossbench member of the House of Lords.
Lord Londesborough took his seat and gave his maiden speech in the House of Lords in 1999, just before being excluded by the House of Lords Act 1999.[1] He became a member of the Lords again in June 2021, being elected by the whole House in a by-election following the retirement of The Countess of Mar.[2] He took the oath on 1 July 2021. Nearly 22 years after, Lord Londesborough spoke again in the Lords, touching on his first maiden speech and foreign aid on 27 October 2021.[3]