Sir Julian Bernard Knowles (born 26 January 1969)[1] is a British High Court judge.

At Oxford he was offered a place to complete a DPhil in mathematics, but decided to pursue law after volunteering as a paralegal to help death row inmates in Oklahoma.

In addition to practice, he was co-author of Nicholls, Montgomery, Knowles: The Law of Extradition and Mutual Legal Assistance in 2002 which was taken into a third edition and The Abolition of the Death Penalty in the United Kingdom: how it happened and why it still matters in 2015.

[1][2] On 2 October 2017, Knowles was appointed a judge of the High Court and assigned to the Queen's Bench Division.

In his Who's Who entry, he listed his interests as "electronic dance music, looking in bookshops, lager, making bread".