John William Evans CBE (27 July 1857 – 16 November 1930) was a British geologist.
From 1911 he took up a new career as a lecturer and researcher at Imperial College of Science and Technology.
At that time he was Lecturer in Petrology at Imperial College and Professional Adviser to the Colonial Office on minerals other than petroleum and coal.
He was awarded the CBE in the 1923 New Year Honours for his work as the Representative of the Colonies and Protectorates administered by the Secretary of State for the Colonies on the Governing Body of the Imperial Mineral Resources Bureau.
She died the following year and in 1901 he was remarried to Jessie Granger with whom he had two daughters.