Alexander Rocke Robertson (May 12, 1841 – December 1, 1881) was a Canadian lawyer, judge, and politician. Born in Chatham, Canada West, the second son of Alexander Rocke Robertson and Effie Eberts, Robertson attended the Caradoc Academy and then studied law in Chatham. He was called to the bar in 1863 and practiced law in Windsor. He moved to British Columbia in 1864 arriving in Victoria, British Columbia. He found work as an editor for the newspaper Daily Chronicle since he was unable to practice as a lawyer since only British trained lawyers were allowed to practice. In 1864, the rules were changed and Robertson was admitted to the bar of Vancouver Island. He was a founding member of the Law Society of British Columbia in 1869.