| Honorific-Prefix: | The Right Honourable |
| Lord Justice Arnold | |
| Office1: | Lord Justice of Appeal |
| Term Start1: | 1 October 2019 |
| Office2: | Justice of the High Court |
| Term Start2: | 1 October 2008 |
| Term End2: | 30 September 2019 |
| Birth Name: | Richard David Arnold |
| Birth Date: | 1961 6, df=y |
| Nationality: | British |
| Alma Mater: | Magdalen College, Oxford University of Westminster |
| Occupation: | Judge |
| Profession: | Law |
Sir Richard David Arnold (born 23 June 1961)[1] styled the Rt Hon Lord Justice Arnold is a Judge of the Court of Appeal of England and Wales.
Arnold was educated at Highgate School and Magdalen College, Oxford, before gaining a diploma in law from the University of Westminster.[2]
He was called to the bar in 1985 and made a silk in 2000. He was appointed to the High Court Chancery Division in 2008 becoming the judge in charge of the Patent Court in April 2013. He was appointed to the Court of Appeal on 1 October 2019.[3]