Sir Mark Arthur Wall (born 4 March 1963),[1] styled The Honourable Mr Justice Wall, is a British High Court judge.

[2] He was educated at King Charles I School in Kidderminster and completed a BA at St John's College, Cambridge in 1984.

[1] Wall was called to the bar at Lincoln's Inn in 1985 and developed a practice in criminal law based at Citadel Chambers.

On 1 October 2020, Wall was appointed a judge of the High Court, following the promotion of Sir Richard Arnold to the Court of Appeal, and he was assigned to the Queen's Bench Division (now King's Bench Division).

[1] In 1987, Wall married Carmel Adler (a circuit judge).