Sir Adam Martin Johnson (born 4 October 1965)[1] is a British High Court judge.

Johnson was born in Sheffield, England and attended Beaver Hill Comprehensive.

[2][1] In 1990, Johnson was admitted as a solicitor and joined Herbert Smith Freehills where he specialised in commercial litigation.

He took silk in 2017 and was appointed a deputy High Court judge in 2018.

[1] On 2 October 2020, Johnson was appointed a judge of the High Court, replacing Sir Henry Carr who had died, and he was assigned to the Chancery Division.