Christopher Isham (/ˈaɪʃəm/; born 28 April 1944),[3] usually cited as Chris J. Isham, is a theoretical physicist at Imperial College London.
Together with other physicists, such as John C. Baez, Isham is known as a proponent of the utility of category theory in theoretical physics.
Isham has appeared in several NOVA television programmes as well as a film about Stephen Hawking.
Physicist Paul Davies has described Isham as "Britain's greatest quantum gravity expert".
[4] As a practising Christian, Isham has also written about the relationships among philosophy, theology, and physics.