Horace Joules LRCP, MRCP, MRCS, FRCP (21 March 1902 – 25 January 1977) was a British physician, health administrator and health campaigner, who played an important role in promoting public health and preventative medicine; particularly the link between cigarette smoking and lung cancer following the work of Richard Doll, Austin Bradford Hill, Ernst Wynder and Evarts Graham, and the adverse effects of air pollution.