Sir Aubrey Strahan KBE FRS (20 April 1852 – 4 March 1928) was a British geologist.

In May 1875 (the year of his graduation) he was employed in a temporary capacity by the Geological Survey, then headed by Andrew Ramsay, as an assistant geologist.

The work for which he is best known is the extensive series of surveys of the South Wales coalfield.

He was always attracted by the economic aspects of the study of geology, and this is well-reflected in the coalfield work.

These included preparation of maps for the war zones (particularly relevant for areas of trench warfare); provision of staff, as geologists were needed in the field; and exploiting mineral resources for the raw materials and energy sources needed for war production.