John David Humphreys (14 September 1837[1][2] – 8 November 1897) was an English merchant, chemist and druggist in Hong Kong. He was general manager of the A. S. Watson & Co., Ltd. and member of the Sanitary Board.
^England, Select Births and Christenings, 1538-1975
^England, United Grand Lodge of England Freemason Membership Registers, 1751-1921