Campbell Greig De Morgan (22 November 1811 – 12 April 1876) was a British surgeon who first speculated that cancer arose locally and then spread, first to the lymph nodes and then more widely in the body.
The de Morgan family, of Huguenot origin, had a long association with the British East India Company.
He was actively involved in the Middlesex Hospital Medical School from its foundation in 1835 and was a close associate of its founder, Sir Charles Bell.
His death in 1876 was caused by his sitting up throughout the night of 6 April at the bedside of his close friend, the artist John Graham Lough.
A bust of Campbell De Morgan by John Graham Lough is located at the Middlesex Hospital, London.